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: Evaporation of sweat uses energy, and the energy comes from body heat., Fact2: When sweat comes in contact with the skin it is cooled as the sweat evaporates., Question: energy leaves from what when sweat contacts with skin (A) radiation (B) heat energy (C) expelled (D) vapors (E) body heat (F) heat produced (G) conduction (H) metal
[EX A]: E

[EX Q]: Fact1: All life relies on a relatively narrow range of pH, or acidity., Fact2: Human life is dependent life., Question: what relies on a relatively narrow range of acidity? (A) gravity (B) mammals (C) animals (D) trees (E) humans (F) density (G) volume (H) potatoes
[EX A]: E

[EX Q]: Fact1: oil is formed by layers of sediment pushing down on decomposing algae, Fact2: Earthy sediment of fine particles of rock and soil suspended in and carried by water., Question: What is created when fine particles press down on algae? (A) DDT (B) More algae (C) More fine particles (D) smog (E) urea (F) Water (G) Oil (H) gas
[EX A]:
G