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").

Q: Fact1: lungs are used for breathing air by land animals, Fact2: Elephants are the largest animals on land., Question: What uses lungs for breathing air? (A) rocks (B) some mammals (C) Frogs (D) monotremes (E) humans (F) bacteria (G) elephants (H) oak trees

A: G
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Q: Fact1: All life relies on a relatively narrow range of pH, or acidity., Fact2: Human life is dependent life., Question: what relies on a relatively narrow range of acidity? (A) gravity (B) mammals (C) animals (D) trees (E) humans (F) density (G) volume (H) potatoes

A: E
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Q: Fact1: hibernation is used for conserving energy by some animals, Fact2: Hibernation is a sleep-like state., Question: what is used for conserving energy by some animals? (A) hydration (B) food and shelter (C) bears (D) breathing (E) hunting (F) organic molecules (G) dormant state (H) sleep-like state

A:
H
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