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: Echinoderms lack a centralized nervous system., Fact2: Sand dollars and sea biscuits are also echinoderms., Question: What lacks a centralized nervous system? (A) Damaged hearing (B) Humans (C) Horses (D) Sand dollars (E) insects (F) Chickens (G) Pesticides (H) barnacles

Answer: D


Question: Fact1: the Earth being tilted on its rotating axis causes seasons, Fact2: Spring, summer, autumn, and winter are the seasons of the year., Question: What causes spring, summer, autumn, and winter? (A) meteor showers (B) heat production (C) the sun's energy (D) Generating heat (E) Earth tilted on rotating axis (F) Something with a head, thorax, and abdomen (G) Earth vibrating (H) lunar cycle

Answer: E


Question: Fact1: a greenhouse is used to protect plants by keeping them warm, Fact2: Retains heat in cold weather, reflects exterior heat in warm weather., Question: a greenhouse is used to protect plants by doing what? (A) reduced heat (B) colder and wetter (C) storing lawnmowers (D) holding plant pots (E) retaining heat (F) In the winter (G) food and shelter (H) starting fires

Answer:
E