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 light bulb is used for seeing in the dark, Fact2: Conventional light bulbs generate light by heating a filament., Question: What is helpful for seeing in the dark? (A) an electron microscope (B) an electron lens (C) microscope (D) closing the blinds (E) blackouts (F) closing your eyes (G) focusing a lens (H) heating a filament
[A]: H

[Q]: Fact1: a prism is used for refracting light, Fact2: Refraction is the bending of light cause by a speed change when it passes through different media., Question: What aspect of light changes when it passes from air into a prism? (A) power (B) seasons (C) speed (D) energy (E) a wave (F) Joules (G) heat (H) unique
[A]: C

[Q]: Fact1: if a habitat can no longer support animals then those animals will move to another area, Fact2: Animals are dependent on plants for food and habitat., Question: What needs to be lacking for a creature to change habitat? (A) warmth (B) inedible plants (C) wind (D) oxygen (E) nektar (F) food (G) O2 (H) dirt
[A]:
F