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: Heat and temperature are the same thing., Question: What can change the state of matter? (A) temperature (B) color (C) a-a gradients (D) electricity (E) hypothyroidism (F) fossil fuels (G) global warming (H) flavor
[A]: A


[Q]: Fact1: skin is used for protecting the body from harmful substances, Fact2: Skin is the body's largest organ., Question: What can protect the body from harmful substances? (A) the body's largest organ (B) layers of fat (C) Electric devices (D) bones (E) sunburns (F) hard outer covering (G) deoxyribonucleic acid (H) muscle
[A]: A


[Q]: Fact1: Energy enters ecosystems in the form of sunlight or chemical compounds., Fact2: Biomes are global ecosystems., Question: Energy enters what in the form of sunlight or chemical compounds. (A) biomes (B) fire (C) light (D) Energy. (E) Energy (F) LEDs (G) propagate (H) photons
[A]:
A