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").

[Q]: Fact1: heat can change the state of matter, Fact2: Matter exists in a solid, liquid or gas state and can change forms., Question: _ can change liquid to gas. (A) magnetism (B) cycles (C) energy (D) vapors (E) condensation (F) gravity (G) thirst (H) Heat
[A]: H


[Q]: Fact1: Biomass is the total mass of organisms at a trophic level., Fact2: Producers make up the first trophic level, primary consumers the second, and so on., Question: What is the total mass of primary consumers (A) Plants (B) animals (C) food (D) Mountains (E) Biomass (F) decreases (G) all matter (H) Weight
[A]: E


[Q]: Fact1: condensing means changing from a gas into a liquid by reducing heat energy, Fact2: Condensation involves molecules joining together with the release of water., Question: What results in changing from a gas into a liquid by reducing heat energy? (A) exposure to cold (B) degrees celcius (C) molecules joining together (D) rain or sun shine (E) Warm air moving into cold air (F) molecules separating (G) molecules becoming nothing (H) molecules exploding
[A]:
C