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").
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Question: Fact1: exercise increases a body 's strength, Fact2: Strength is increased by resistance activities., Question: which of the following are a type of exercise? (A) resistance activities (B) fantasy football (C) sitting down (D) Relieve pain (E) Something that is self-aware (F) running for office (G) animal behaviorists (H) Riding a bike

Answer: A


Question: Fact1: Antigens are molecules that the immune system recognizes as foreign to the body., Fact2: Children are born with an immature immune, or defense, system., Question: What are molecules that the defense system recognizes as foreign to the body? (A) Allergies (B) lungs (C) antigens (D) bacteria (E) parasites (F) atoms (G) red blood cells (H) acetic acid

Answer: C


Question: Fact1: Cells secrete acids and bases to maintain the proper pH for enzymes to work., Fact2: Phosphatases are enzymes that remove phosphates from other enzymes., Question: What is needed from cells for phosphatases to keep the proper pH? (A) plasma (B) secretion of bases only (C) secretion of proteins (D) metabolic reaction (E) it helps plants in growing (F) Positive charges (G) Transfers energy (H) secretion of acids and bases

Answer:
H