"Troop" is a noun that can mean "a group of soldiers, especially a cavalry unit commanded by a captain, or an airborne unit," so a troop is made up of soldiers, and we need to pick out an answer choice that describes what kind of thing a flock is made up of. While "bird," "horse," and "firefly" may each look like a potentially correct answer because each one is a living thing, "bird" is the correct answer because just like a troop consists of a number of soldiers, a flock consists of a number of birds.

Beavers build dams, so we need to pick out an answer choice that describes something that spiders build. “Web,” “fly,” and “spin” might each look like a potentially correct answer; however, while spiders spin webs, spiders don’t build “spins,” so “spin” cannot be the correct answer. Similarly, while spiders use webs to catch flies, spiders don’t make flies, so “fly” cannot be the correct answer. Spiders do spin webs, however, just as beavers make dams, so “web” is the correct answer.

Since birds fly, we need to pick out an answer choice that describes what fish do. Of the listed answer choices, two are verbs - "crawl" and "swim." Since fish swim, "swim" is the correct answer choice.

Snakes move by slithering, so we need to pick out an answer choice in which the first word is a noun conveying an animal and the second word a verb describing how that animal moves. While “bat is to fly” and “bee is to hive” might each look like a potentially correct answer, “hive” is not a verb that describes how bees move, but a noun describing where bees live. So, “bee is to hive” cannot be the correct answer. Bats, however, move around by flying, just as snakes move around by slithering, so “bat is to fly” is the correct answer.

"Cattle" is the collective name for "cows" and other "bovine" creatures. So, to solve this analogy you need to determine which of these animals is described by the collective name "swine." The correct answer is "pigs." So, a "swineherd" is a farmer who keeps pigs.

To be "curious" means to be interested in other things, to want to find something out. This is a characteristic commonly associated with a cat, so to answer this analogy you have to determine which of these is a characteristic commonly associated with a dog. The correct answer is that dogs are commonly described as being "loyal." To provide further help, a "kennel" is somewhere dogs live; "volatile" means unstable, dangerous; "potent" means strong.

Since a caterpillar eventually becomes a butterfly, we need to pick out another pair of words in which the first word describes an animal that eventually metamorphoses into a form that the second word describes. While "flower is to leaf" might look like an answer, flowers don't become leaves—both are parts of a plant. Similarly, "insect is to dragonfly" is not correct either since an insect does not become a dragonfly—a dragonfly is a kind of insect. "Tadpole is to frog" is the correct answer because just like a caterpillar metamorphoses into a butterfly, a tadpole metamorphoses into a frog.

Since birds live in nests, we need to pick out a word that describes what kind of animal lives in a den. Since "den" means "the lair of a wild usually predatory animal," "bear" is the correct answer, since "bear" is the only answer that is a predatory wild animal of the possible answer choices, and bears specifically hibernate in dens.

Since a "foal" is a young horse, we need to find another pair of words where the first word is the name for the young version of the animal that the second word represents. While "dog is to puppy" might seem like a good answer, the words are not in the same order as they are in "foal is to horse"; "foal is to horse" begins with the younger animal, whereas "dog is to puppy" ends with the younger animal, so it can't be the correct answer. "Kitten is to cat," however, has its words in the correct order, with the word for the younger animal coming first, and since a "kitten" is a young cat, "kitten is to cat" is the correct answer.

Baby cows are called calves, so to solve the analogy, you need to pick out an answer choice that describes what one calls a baby lion. Baby lions are called "cubs," so "cub" is the correct answer.