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: if an animal sweats then that animal 's bodily water decreases, Fact2: Most of the time, sweating can reduce body-heat., Question: Reducing body-heat can also decrease an animal's what? (A) Quality of life (B) prolactin release (C) Bodily water (D) Heart rate (E) heat energy (F) Weight (G) Temperature (H) energy
[EX A]: C

[EX Q]: Fact1: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Ash clouds are a particular problem for aircraft., Question: What are particular problems for aircraft in the atmosphere? (A) transportation (B) clog airways (C) extremely low humidity (D) volcanic clouds (E) feedback mechanisms (F) negative feedback (G) gas spreads in the air (H) very complex
[EX A]: D

[EX Q]: Fact1: conserving water can be used for survival in a dry environment, Fact2: Deserts are usually very, very dry., Question: where can conserving water be used for survival in? (A) our planet (B) oceans (C) rivers (D) deserts (E) watershed (F) clouds (G) Mountains (H) soils
[EX A]:
D