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: glass cause refraction of light, Fact2: Refraction Refraction is the bending of light rays., Question: Glass causes the _ of light (A) intensification (B) bending (C) photons (D) a wave (E) Pollution (F) blocking (G) heat (H) amplification

A: B
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Q: Fact1: a rainbow is formed by refraction of light by separating light into all different colors, Fact2: Introduction A rainbow is often given as an everyday example of a spectrum., Question: A spectrum is formed by refraction of light by separating light into all different what? (A) categories (B) dyes (C) photons (D) pigments (E) light (F) colors (G) Energy. (H) energy

A: F
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Q: Fact1: Mammals can also generate little bursts of heat by shivering., Fact2: Shivering costs the bird, however, by depleting energy stores., Question: How can mammals generate heat? (A) layers of fat (B) Ice cubes (C) wishing (D) Depleting energy stores (E) death (F) with their fur (G) raising their temperature (H) by keeping them warm

A:
D
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