A group of wolves is called a pack. Similarly, a group of geese is called a gaggle. 

None of the other analogies have this specific relationship.

Groups of children are not called a school, although groups of children do go to school.

Wolf and dog are related, but the analogy does not fit the relationship of single animal to group of that animal.

Groups of pigs do live on farms, but the order of the words is incorrect: a group of farms is not called a pig.

A group of reptiles is not called a herd; a herd typically refers to a group of hoofed animals.

A pyramid is a three-dimensional version of the triangle. Similarly, a sphere is the three-dimensional version of the circle. 

None of the other analogies have this relationship.

Globes are spherical, but refer specifically to spheres upon which three-dimensional maps of the Earth are depicted. 

An oval is simply an elongated circle, also known as an ellipse.

Round is the quality of being non-linear, for either three-dimensional or two dimensional.

Cube is the three-dimensional version of the square.

This analogy shows a part to whole relationship. 

A singer is part of a larger unit (the choir). 

The correct answer is "player is to team." A player is part of a team (the team being the whole). 

An "orchard" is a group of "trees," particularly fruit "trees." So, to solve this analogy you need to determine which of these is found in a "museum." The correct answer is "artifacts." A collection of "artifacts" is known as a "museum." An "artifact" is a man-made object of historical of cultural interest. Additionally, "pestilence" is disease; a "vocation" is an occupation, a job.

A "midshipman" is a low ranking member of the "navy." So, to solve this analogy you need to determine which of these is a low ranking member of the "army." The correct answer is "private." Additionally, an "aviator" is a pilot of planes; a "cartographer" is a mapmaker.

"Infantry" is a term that can be used to describe a group of "soldiers." So, to solve this analogy you need to determine which of these an "armada" is made up of. The correct answer is that an "armada" is a fleet, a group of "warships." Additionally, "pedestrians" are people walking, as opposed to people in cars.

A peanut's outermost layer is its shell. The correct answer will demonstrate a similar relationship. A banana's outermost layer is its peel, so that is the correct answer.

A xylophone is an example of an instrument, so we need to pick out an answer choice that consists of two nouns, where the first is an example of the second. While “pear is to fruit” and “game is to chess” might each look like a potentially correct answer, “game” is not an example of a “chess,” so “game is to chess” cannot be the correct answer. A pear is an example of a fruit, however, just as a xylophone is an example of an instrument, so “pear is to fruit” is the correct answer.

A scull is a small boat, so to solve this analogy you have to determine which of the answer choices is a bigger version of a hamlet. A hamlet is a small community, like a village, so the correct answer is “town.”

A "virtue" is a good or righteous attribute in a person, and a "vice" is the opposite, a negative or bad attribute in a person. "Honesty" is a example of a virtue, so to solve this analogy you have to determine which of these answer choices is an example of a vice. "Mendacity" means dishonesty and is the best example of a vice that is available.