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: a greenhouse is used to protect plants by keeping them warm, Fact2: Flower size varies by plant., Question: How does a greenhouse protect flowers? (A) keeps them away from the sun (B) keeps them warm (C) keeps them out of soil (D) an external framework (E) it needs them (F) keeps them cold (G) rays or beams (H) by indirect light
[EX A]: B

[EX Q]: Fact1: if gas is heated then that gas will expand, Fact2: If more space between 2 galaxies more space to expand so it moves away faster., Question: When gas is heated, it takes up more: (A) solutes (B) plasma (C) fluidity (D) energy (E) space (F) viscosity (G) matter (H) Energy.
[EX A]: E

[EX Q]: Fact1: sugar causes food to taste sweet, Fact2: Corn sugar is primarily glucose., Question: What causes sweetness in foods? (A) hormones (B) heat (C) eukyarotes (D) glucose (E) glaucoma (F) gluten (G) lactose (H) Enzymes
[EX A]:
D