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: All chemical reactions require activation energy to get started., Fact2: Fire is a chemical reaction., Question: What does fire require to get started? (A) an engine (B) activation energy (C) water (D) energy usage (E) direct energy (F) dogs (G) activated almonds (H) adding heat

Answer: B

Question: Fact1: Hormones are chemical messengers that control many body functions., Fact2: Growth hormone is in many ways an anti-aging hormone., Question: What controls anti-aging? (A) A computer (B) air (C) chemical messengers (D) ice (E) an electric stove (F) Electrical energy (G) water (H) Chemical energy

Answer: C

Question: Fact1: Oxygen is just one substance transported by the blood., Fact2: Active brains and muscles require more oxygen and nutrients., Question: Muscles require substances transported in the body by (A) sugar (B) food (C) fibers (D) fat (E) neurons (F) blood (G) glucose (H) bones

Answer:
F