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: Flagella help prokaryotes move., Fact2: Most prokaryotes are unicellular., Question: What helps unicellular organisms move? (A) evaporation (B) bacteria (C) heat energy (D) glucose (E) sweating (F) flagella (G) legs (H) blood

A: F
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Q: Fact1: Skin color is another polygenic trait., Fact2: Most dental variations are polygenic, that is controlled by several genes., Question: Skin color is a trait controlled by what? (A) prokaryotic cells (B) one gene (C) enzymes (D) keratin (E) one's descendants (F) several genes (G) the environment (H) a single gene

A: F
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Q: Fact1: a car engine usually converts gasoline into motion and heat through combustion, Fact2: Material is classified as a combustible liquid., Question: What does an engine use as liquid fuel? (A) fossil fuels (B) gasoline (C) kerosene (D) energy (E) bunker fuel (F) Energy. (G) fur and fat (H) water

A:
B
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