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: Echinoderms use pheromones to communicate with each other., Fact2: All echinoderms are deuterostomes ., Question: What use pheromones to communicate with each other? (A) passenger pigeons (B) honeybees (C) deuterostomes (D) Most plants (E) insects (F) animals (G) huddle together (H) orchids

A: C
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Q: Fact1: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: Gametes, the sperm and eggs, are produced by mitosis in the haploid gametophyte., Question: What swims from male to female reproductive organs for fertilization? (A) gametes (B) barnacles (C) fur seals (D) eggs (E) offspring (F) haploid (G) seeds (H) diploid

A: A
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Q: Fact1: Plasma cells are activated B cells that secrete antibodies., Fact2: Antibodies are manufactured by the immune system., Question: The molecules secreted by activated B cells are part of the: (A) immune system (B) Organic compounds (C) Energy. (D) an organism's body (E) acetic acid (F) harmful substances (G) Chemical energy (H) Veins and arteries.

A:
A
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