Something that is "eccentric" is bizarre or "irregular." The other answer choices are not as fitting and have different meanings from "eccentric" or peculiar. They are as follows: "occasional" means occurring sometimes; "sporadic" means taking place off and on; and "commonplace" means ordinary.

Something that is "primitive" is rudimentary and ancient, so "rudiementary" is the correct answer. As for the other answer choices, none are close in meaning to "primitive": "premier," when used as an adjective, means primary in importance; "pivotal" means crucial; and "contemporary" means modern or existing at the same time as.

"Pacify" means make calm or bring peace to, so "calm" (here used as a verb) is the correct answer. To help you, "despise" means hate deeply, and "bewilder" and "confound" are synonyms which both mean confuse.

Something that is "luminous" is light and bright whereas "dark" is the exact opposite of "luminous." To be "enlivened" is to be awakened and to be "secretive" is to be hidden.

A "benefactor" is defined as "a person who gives money or other help to a person or cause," so we need to pick out an answer choice that is a noun, refers to a person, and specifically means "a person who gives help to a cause." "Donor," a noun meaning "a person who donates something, especially money to a fund or charity," is the only answer choice that is similar in meaning to "benefactor," so "donor" is the correct answer.

Something that is of "benefit" is something that helps; an advantage. To provide further guidance, an "obstacle" is something that gets in the way, which is also the same thing as a "hindrance;" "barrage means" to attack continuously; a "garrison" is a group of troops left to defend something.

A "neophyte" is someone who is a beginner or a novice, so "novice" is the correct answer. To help you, an "expert" is someone who has a lot of knowledge and experience in a certain area; "expert" is an antonym of "neophyte" and "novice." For further help, "intermediate" means middle or of a difficulty between easy and challenging. Finally, "cathartic" means healing due to allowing one to purge one's negative emotions.

"Credible" means believable or trustworthy. For example, a newspaper is credible if it has high reporting standards and rarely makes mistakes or reports inaccurate information. So, "trustworthy" is the correct answer.

"Beneficial" means useful or helpful, so "helpful" is the correct answer. To help you, "deleterious" is a synonym of harmful, and both words are antonyms of "beneficial." To further help you, "sarcastic" means humorous, ironic and not serious, and "suspicious" means doubtful.

The prefix "metro­-" means related to the city or to city life. A “metropolis” is a big city. To provide further help, we call the towns just outside a big city “suburbs.”