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: seeing requires light, Fact2: Sight is the mere ability to see, and the eye's responses to light shining into it., Question: What do eyes require? (A) a form of oxygen (B) Light shining into it (C) Exposure to oxygen and water (D) A dark environment (E) Contact lenses (F) melanin amount (G) tissue made of chondrocytes (H) Glasses

Answer: B


Question: Fact1: a rubber band snapping causes the particles in the rubber band to vibrate, Fact2: Sound waves are vibrations in matter., Question: a rubber band snapping causes the particles in the rubber band to cause what? (A) friction (B) sound waves (C) rumbles (D) kinetic energy (E) color spots (F) energy (G) Energy. (H) loud music

Answer:
B