The word “Nostratic” is used to describe a hypothesized proto-macrolanguage family that was spoken by people somewhere in Asia roughly fifteen thousand years ago. According to the theory, all Indo-European, Dravidian, Afro-Asiatic, Uralic, and Kartvelian languages derive from this one macrolanguage. The theory is widely contested by many geographers, but is extremely influential in the field of linguistic geography.  

Bengali is part of the Indian language branch of the Indo-European language family. It is widely spoken by people in eastern India and Bangladesh. It is in fact the only language on this list that is even part of the Indo-European language family, let alone part of the Indian branch. Hebrew is a Semitic language and part of the Afro-Asiatic language family. Burmese and Cantonese are part of the Sino-Tibet language family. Thai is a branch of the Tai-Kadai language family.

Switzerland, which has an ethnically and linguistically diverse population, recognizes four official national languages - French, German, Italian, and Romansh. Spanish is not an official or widely used language in Switzerland. Romansh is spoken by a very small number of Swiss people but is still recognized by the Swiss government for a variety of historical reasons.

Indo-European, the language family that includes all European languages (which are widely spoken in Europe, the Americas, Africa, and Australasia) and Indian and Iranian, is spoken by slightly over fifty percent of the world’s population. The next largest is Sino-Tibet which is spoken by close to a quarter of the world’s population.

The most linguistically diverse regions, with the notable exception of a few nations in Oceania, are found in Africa and Asia. More specifically they are generally found in Sub-Saharan Central Africa and South and Southeast Asia. It is worth noting that in recent years the rate of linguistic diversity is declining even in these regions, as languages like English, French, Hindi, and Chinese extend their influence and wipe out local languages.

Chinese is spoken by more people around the world than any other language. Spanish and English are well behind in second and third respectively.

The Indo-European language family is the world's most widely spoken family. There are eight distinct branches of the Indo-European languages, four of which each have relatively large numbers of speakers. The four most spoken language branches of the Indo-European family are Germanic, Indo-Iranian, Romance, and Balto-Slavic. The Germanic branch itself is the most widely spoken language branch based on number of speakers, largely due to the fact that English is a part of this branch.

The second most widely spoken language family in the world today is the Sino-Tibetan family. This language family encompasses the languages of China. With China's high population along with its global influence, it is not surprising that this language family is so widely spoken today.

Canadian French is not a creole which combines French with any other language. It is simply the French language itself. It is often referred to as "Canadian French" rather than just "French" to emphasize that due to the regional separation of Canada from France, this form of the spoken language has a different accent and some different terminologies. This is the same distinction as American English from British English. While they are the same language, there are distinctly different accents and terminologies used in each.

For more understanding, here is a breakdown of each of the incorrect answers:

Bislama is a creole language of Vanuatu, an island nation in the South Pacific.  The language of Bislama is comprised mostly of English but also combines many words from French and other Vanuatu languages.

Haitian Creole is one of two national languages of the Caribbean country of Haiti. The other national language of Haiti is French. Haitian Creole is comprised mostly of French words, but also makes use of terminology from Portuguese, Spanish, Taino, and a number of West African tribal languages.  Often Haitian Creole is simply referred to as Creole, or Kreyol. This reference is deceiving and has deluded many people to think that Creole is a specific language rather than the fact that it is a type of language which many languages in the world are categorized as.

Papiamento is a creolized form of the Spanish language spoken in Netherlands Antilles, also known as the West Indies. Papiamento is mostly comprised of Spanish, but combines elements of Portuguese, Dutch, English, French, Arawakan, and other tribal African languages and dialects. There are approximately 300,000 speakers of Papiamento in Curacao, Bonaire, and Aruba combined.

Portuguese Creole is also referred to as Cape Verdean or Cape Verdean Creole. This language is spoken throughout the Cape Verde Islands which are located off the north west coast of Africa. Portuguese Creole is the oldest creole language which is still spoken today. Portuguese Creole is comprised of mostly terminology from Portuguese, but also a mix of terminology from various Western African languages, English, French, and Latin.

When various languages become more similar, and even coalesce into one language, due to their use within the same geographical region, it is called language convergence. Language divergence is the opposite of increasing similarity, while language replacement suggest that one language will be overtaken by another, and Creolization describes the process by which what was originally a dialect composed of simplified forms of various languages, becomes a native language.

Venezuela has one national language, Spanish. There are a few dialects of Spanish and some tribal creole languages using Spanish, but overall this country is not influenced by multilingualism.

Belgium is a country which has three national languages; French, Dutch, and German. The people of this country are very much influenced by multilingualism, having to use all three national languages in the government's affairs. 

The United States is a "melting pot" of language. With immigrants from all over the world, multilingualism is a growing influence in the country.

Cyprus is a country that has two national languages, Greek and Turkish. The country is divided by the two language groups. Multilingualism in Cyprus influences many conflicts for the country.

Africa is not a country. Also, the continent of Africa has a plethora of languages and often has conflicts due to the influence of multilingualism in the region.