"Presumptuous" is an adjective that is used of a person or their behavior and means "failing to observe the limits of what is permitted or appropriate," so we need to pick out an answer choice that means something like "not appropriate." "Apt," then, cannot be the correct answer because "apt" means "appropriate or suitable in the circumstances," making it an antonym, not a synonym of "presumptuous." "Audacious," however, is an adjective that means either "showing a willingness to take surprisingly bold risks," or "showing an impudent lack of respect." Because "audacious" is the answer choice that is closest in meaning to "presumptuous," "audacious" is the correct answer.

Someone who is "adaptive" is good at adjusting to his or her surroundings. Someone who is "flexible" is able to accommodate different types of situations. Therefore, "adaptive" is most similar to "flexible."

Someone who is “deft” is very skillful at a particular activity. Something that is “harmful” is damaging. Something that is “overt” is obvious, palpable, or not at all hidden.

"Chatty" is the adjectival form of the word "chat," which means talk casually about relatively unimportant subjects. Someone who is "chatty" likes to chat, so they are "talkative." "Fluent" may look like a potentially correct answer, but someone "fluent" in a language is able to speak that langauge very well, so it is not close in meaning to "chatty."

Someone who is “stern” is very strict and serious, so "stern" is closest in meaning to “severe,” a word that means very serious.

Someone who is "witty" is able to say clever things that are funny and entertaining. Therefore, "clever" is the correct answer.

Do you have a friend who is always happiest in large groups, or loves to talk to others more than anything else? Such a person would be "gregarious," or extremely social. "Talkative" certainly shares a similar meaning, so it is our correct choice. "Shy" is the opposite of "gregarious," and the same goes for "introspective," or deeply thoughtful and reflective. Finally, a "rude" person is impolite, not necessarily social or talkative.

We would use the adjective "bashful" to describe someone who is nervous around others and would likely avoid being noticed whenever possible. In other words, "bashful" is synonymous with "shy" or "timid," and we have found our answer! Just to be thorough, let's take a look at the three incorrect choices. "Resilient" refers to the quality of being strong or able to endure hardship. "Active" can either relate to physical exercise or simply mean busy, and a "corrupt" individual acts dishonestly or otherwise immorally, especially in a position of power. None of these choices relate to the term "bashful" at all, so "timid" should be our final choice.

The word “humorous” means funny, so "funny" is the correct answer. The word “lonely” means feeling sad about being by yourself.

To be “sincere” means honest and truthful. It can also be used to describe an effort that is heartfelt as opposed to merely feigned. "Genuine" is thus the answer choice closest in meaning to "sincere," as it is close in meaning to this second usage. While "sincere" contains the syllable "sin," it does not derive from any word meaning "sin"; however, this may have encouraged you to pick "immoral," a synonym of "sinful," as your answer. As for the other terms, "bold" means brazen and undaunted; and "proud" means taking pleasure from what one has accomplished; and "optimistic" means choosing to see the future in a positive, hopeful light.