In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
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Question: Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: Flower size varies by plant., Question: How does a greenhouse protect flowers? (A) keeps them away from the sun (B) keeps them warm (C) keeps them out of soil (D) an external framework (E) it needs them (F) keeps them cold (G) rays or beams (H) by indirect light

Answer: B

Question: Fact1: better senses have a positive impact on an animal 's survival, Fact2: All dogs are animals ., Question: what can have a positive impact on survival with better senses? (A) pugs (B) deer (C) pigs (D) mice (E) dog (F) cats (G) bird (H) cows

Answer: E

Question: Fact1: Migration is a type of movement that changes population size., Fact2: Migration Much of the life of a spiny lobster involves travel., Question: A life involving travel is a type of movement that changes what? (A) Continents drifting (B) the environment (C) Animal survival (D) important habitats (E) major threat to health (F) population size (G) an organism's body (H) Something to move

Answer:
F