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: 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: hydropower requires damming a river, Fact2: Another source of energy is hydropower., Question: What is a source of energy? (A) fossil fuels (B) cooking (C) damming a river (D) sleeping (E) napping (F) Electrical energy (G) our nearest star (H) sunlight
[A]: C


[Q]: Fact1: Specialization occurs when competing species evolve different adaptations., Fact2: Specialization decreases mortality 12,13 and increases survival., Question: What increases survival? (A) root growth (B) Chlorophyll (C) death (D) Lack of water (E) Lack of food (F) fur and fat (G) Evolving adaptations (H) Fully cooking the oysters
[A]:
G