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: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Supersaturation is inferred to be a common state for atmospheric haze particles., Question: What decreases the temperature by blocking the Sun? (A) cilia (B) the Sun (C) the wind (D) haze (E) ice (F) fat (G) rain (H) acids
[EX A]: D

[EX Q]: Fact1: cell division often causes growth, Fact2: Growth and Development Most organisms grow., Question: What causes organisms to grow? (A) genetic diversity (B) viruses (C) pathogens (D) genetic material (E) pollution (F) prolactin release (G) Time and energy (H) cell division
[EX A]: H

[EX Q]: Fact1: Viruses often infect bacteria., Fact2: Influenza viruses are restless., Question: What can infect bacteria? (A) heat or cold (B) bioaerosols (C) burning coal (D) white vinegar (E) harm them (F) vinegar (G) influenza (H) fungi
[EX A]:
G