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: threatening behavior by predators causes a porcupine to extend its quills, Fact2: Puffers are smooth skinned while Porcupines have the characteristic spines or quills., Question: What does a porcupine do with its spines when it's threatened? (A) killing insects (B) Shoot them (C) kill them (D) protect them (E) Extend them (F) Shed them (G) Retract them (H) behave

Answer: E


Question: Fact1: landfills have a negative impact on the environment, Fact2: Most municipal trash is disposed of in such landfills., Question: What mostly has a negative effect on the environment? (A) pure water (B) deforestation (C) animals (D) cigarettes (E) municipal trash (F) pure oxygen (G) smoking tobacco (H) chlorofluorocarbons

Answer:
E