"Terrestrial" means having to do with the earth or living on land, which makes sense, as the word "terrestrial" is derived from the Latin word "terra," which means Earth. As for the other answer choices, "lunar" means having to do with the moon; "solar" means having to do with the sun; "cosmic" means having to do with outer space; and "spectacular" means impressive or excellent.

The prefixes "e-"and "ex-" both mean out, as in “exit,” which when used as a verb means go out of or leave a location, or “eject,” which means emit, expel, or throw out from a specific location. That means that "expel" is the correct answer, because while "expel" can mean formally kick out of an institution, such as a school, it can also mean throw out of from a specific location. None of the other answer choices are close in meaning to "eject": “demand” means insist or command when used as a verb; “supply” means give aid or resources to when used as a verb; "insist" means refuse to take any other answer or accept any result other than the one that one desires; and "portray" means depict or characterize.

The prefix "uni-" means one, as in “unicycle,” which is a one-wheeled form of transportation powered by pedaling. The word “unify” means make into one group or thing, so "merge" is the correct answer, as "merge" means make two separate groups or things into one group or thing. None of the other answer choices are close in meaning to "unify": “monotonous” means tedious or boring due to having to do something repetitively; “verify” means confirm that something is true; “berate” means yell at or scold; and "soften" means become or make less severe or hard.

"Benevolent" means nice and generous. "Kind" means compassionate. Thus, "benevolent" is a synonym of "kind." It can be inferred that "benevolent" means something positive because "bene" is a Latin root meaning good. 

A tempting wrong answer choice is "beneficial," as it sounds similar to "benevolent." However, "beneficial" means of benefit or causing improvement, which is not the meaning of "benevolent."

The prefix "contra-" means against or opposite and the root "dict" means speak, so “contradict” means to speak against someone and say that their ideas are wrong or when referring to ideas, to oppose an idea by providing evidence or demonstration that it is false. The correct answer is “disagree.” To provide further help, “encourage” means to offer support for someone, and “depict” means represent or show.

The prefix "trans­-" means to change shape, so the word “transform” can most simply be defined as “change.” To provide further help, “mar” means ruin; “remedy” means make better, fix; “soothe” means make better, calm; “deft” means highly skilled.

Note that although words may share a root, they may not necessarily mean the same thing. In this case, "temptation" and "desire" are closest in meaning. "Tempo" refers to timing in music. "Temperature" (think weather) and "temperamental" (think moody) are not related to "temptation" (or desire). As suggested, the words "moody" and "temperamental" are synonymous with each other.