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: 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

[Q]: Fact1: cooking food requires adding heat energy, Fact2: Heat is essentially the source of energy., Question: Doing what to food requires adding the source of energy? (A) burning (B) burying (C) degrading (D) hydration (E) boiling (F) Light (G) sharing (H) cooking
[A]: H

[Q]: Fact1: Gene flow occurs when individuals move into or out of a population., Fact2: Gene flow tends to decrease differentiation., Question: What tends to occur when individuals move in and out of a population? (A) By wind and rain (B) permineralization (C) The bending of a ray of light (D) Something with a head, thorax, and abdomen (E) a decrease in differentiation (F) competing for resources (G) barks and snarls (H) metabolic reaction
[A]:
E