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").

[EX Q]: Fact1: nuclear reactions in stars causes stars to produce light, Fact2: An intense bright light produces a glare., Question: What in stars cause stars to produce bright glares (A) energy of moving objects (B) nuclear reactions (C) direct energy (D) shining suns (E) bright activity (F) Chemical energy (G) moving moons (H) heat energy
[EX A]: B

[EX Q]: 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
[EX A]: B

[EX Q]: Fact1: conserving water can be used for survival in a dry environment, Fact2: Also, camels conserve their water., Question: What survives in a dry environment? (A) bamboo (B) organisms (C) animals (D) camels (E) whales (F) dolphins (G) grass (H) fish
[EX A]:
D