You find clouds in the sky, so we're looking for a noun that describes a place where you might find fish. Of the three answer choices describing environments ("sea," "land," and "air") "sea" is the best answer, as it's where one is most likely to find fish.

You drive on a highway, so to solve this analogy, you have to figure out where you park. The correct answer is that you park in a “driveway.”

Just as basketball is played on a court, soccer is played on a field, so "field" is the correct answer.

“Surf,” when used as verb, means “ride on the crest of a wave, typically while riding on a surfboard.” So, one surfs on the surface of water, and we need to pick out an answer choice in which the first word is an activity, and the second word is the environment in or surface on which that activity typically takes place. While “ski is to snow” and “swim is to lava” might each look like a potentially correct answer, one does not usually swim in lava, and would not be advised to, so “swim is to lava” cannot be the correct answer. However, one can ski on snow, just as one can surf on water, so “ski is to snow” is the correct answer.

The first relationship demonstrates that teachers work in schools, so we need to find an answer in which the first word works at the second word. Thus, the best answer choice is "chef is to restaurant," since chefs typically work at restaurants!

A principal is typically the leader of his or her school, so we are looking for an answer choice in which the first answer is the leader of the second answer. The best answer is "mayor is to town" because mayors are the authority figures and leaders of towns across the country!

A chef works in a restaurant, so to solve this analogy, you need to pick out the answer choice that describes the place where a doctor works. A doctor works in a hospital, so "hospital" is the correct answer.

“Mars” is a planet in our solar system, so “Mars” orbits the “Sun.” This means that “Mars” goes around the “Sun.” So, to solve this analogy, you have to determine which of these answer choices orbits “Earth.” The correct answer is that the “Moon” orbits, or goes around, the “Earth.”

"Peak is to bottom" compares two words that describe opposite ends of an object, its the highest and lowest points, so the two words have opposite meanings and are antonyms. "Large is to small" describes the relative size of two objects, not relative positions on them or sides of them. "Grade is to homework," and "tame is to domesticated" do not describe the highest and lowest point of an object or consist of pairs of antonyms. Both "top is to base" and ""flat is to bumpy" consist of pairs of antonyms, but only "top is to base" describes the highest and lowest points of an object, so it is the better answer choice and the correct answer.

A nursery is somewhere where babies are looked after and learn. So, to solve this analogy, you have to determine who goes to a "classroom" to learn; the correct answer is therefore "student."