"Astronomy" is the study of the universe and celestial bodies. Included in the list of things studied by an "astronomer" are "stars." So, to solve this analogy you first need to determine that "anatomy" refers to the study of the composition of the human body. And then you need to consider which of these answer choices fits under that description. The correct answer is "bone."

An "autopsy" is an examination of a "corpse" to discover how someone died. A "corpse" is a dead body. So, which of these is an examination of the "population?" The correct answer is a "census." In the United States a "census" is conducted every ten years, it involves a series of questions asked by the government to try and determine the nature of the current population. Additionally, a "morgue" is a place where dead bodies are held before they are buried.

A "greyhound" is a dog that is primarily bred and used for "racing." So, to solve this analogy you need to figure out what it is that a "retriever" is used for. Well, the clue is in the name, "retrievers" retrieve things. The correct answer is therefore "fetching," which means to go and get something and bring it back.

An "election" is used to determine the "president" of a country, in most legitimate instances. So, to solve this analogy you need to determine what a "conclave" is used to select. The correct answer is that a "conclave" is used to determine who will be the next "pope." The "Pope" is the leader of the Catholic Church. Additionally, an "imam" is a leader of prayer in the Islamic faith.

A "diner" is a restaurant, somewhere you go to "eat." So, to solve this analogy you need to determine what someone might go to an "academy" to do. Well, an "academy" is a place to study something or practice for something. So, the correct answer is "learn." Additionally, "conspire" means plot with someone else to commit illegal acts.

A "protractor" is defined as "an instrument for measuring angles, typically in the form of a flat semicircle marked with degrees along the curved edge," so since protractors measure angles, we need to pick out an answer choice that describes what a ruler measures. While "volume" might look like a potentially correct answer, rules don't measure volume directly, but can help one collect data in order to calcite the volume of something. "Length" is the correct answer because just as protractors measure angles, rulers measure length.

An "inoculation" is a vaccination, a small amount of a "disease" injected into someone to prevent them from contracting a much more serious version of the "disease." So, the purpose of an "inoculation" is to prevent "disease." What is the purpose of a "levee?" Well, a "levee" is a wall or embankment built to stop the overflow of water. So, the correct answer is that it prevents "flooding."

A "laboratory" is a lab, a place where scientific experiments are conducted. The purpose of a "laboratory" then is to carry out "experiments." What is the purpose of an "amphitheater?" Well, an "amphitheater" is a round and open building where sporting events or plays are carried out, particularly in regard to Ancient Greece or Rome. The correct answer then is "entertain." Additionally, "nourish" means provide food or energy for; "gripe" means complain about something small or unimportant, find fault with; "inhibit" means prevent from doing; "imprison" means confine, lock up.

"Krill" are small animals that float in large numbers in the ocean. Many "whales" eat "krill." So, to solve this analogy you need to determine which of these is something that "cows" eat. The correct answer is "grass."

"Taxidermy" is the process of preparing and "stuffing" animals after they have died. So, "stuffing" is involved in "taxidermy," which of the following is involved in "cremation?" Well, "cremation" is the act of "burning" a body for the purposes of burial. So, the correct answer is "burning."