You are given an elementary science question along with a few answer options. List all the words from the question that are essential and sufficient for choosing the correct answer option. Keep in mind that essential words are necessary to understand the meaning of the given question. However, non-essential words provide little information needed to select the correct answer. You can think about it like this: If the question was in another language, knowing the meaning of which words were necessary and enough for you to understand the question and answer it?. If your answer consists of multiple spans of words from the question, separate those using a comma (", "). Do not generate any word that is not present in the question. Make sure that your response is contained in the given question and the words are in the same order as the question.
 Grammatical correctness is not important.

[EX Q]: Question: Which statement best identifies a basic need of all animals? (A) They need to eat. (B) They need to hide. (C) They need to jump. (D) They need to smell.?
[EX A]: basic, need, animals?

[EX Q]: Question: The snowshoe hare sheds its fur twice a year. In the summer, the fur of the hare is brown. In the winter, the fur is white. Which of these statements best explains the advantage of shedding fur? (A) Shedding fur keeps the hare clean. (B) Shedding fur helps the hare move quickly. (C) Shedding fur keeps the hare's home warm. (D) Shedding fur helps the hare blend into its habitat.?
[EX A]: snowshoe, hare, explains, advantage, shedding, fur?

[EX Q]: Question: Water vapor forms clouds in a process known as ___. (A) evaporation (B) condensation (C) sublimation (D) precipitation?
[EX A]:
Water, vapor, forms, clouds, process