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: Many corals secrete an exoskeleton that builds up to become a coral reef., Fact2: Good examples are Bubble coral, Elegance coral, Frogspawn and other Euphyllia corals., Question: What is secreted by organisms like frogspawn to become a reef? (A) exocrine glands (B) food and shelter (C) exoskeleton (D) bones (E) Energy (F) Chemical energy (G) plasma (H) Energy.

Answer: C


Question: Fact1: Infancy is the period of most rapid growth after birth., Fact2: During infancy, babies learn whether to trust the world., Question: Babies do what most during their rapid growth period? (A) birth (B) move (C) run (D) fight (E) puberty (F) play (G) learn (H) shaking

Answer: G


Question: Fact1: cutting down trees has a negative impact on an ecosystem, Fact2: Plants include trees., Question: Doing what to plants has a negative impact on the ecosystem? (A) planting them (B) deforestation (C) cutting them down (D) Pesticides (E) watering them (F) massive damage (G) sitting under them (H) Abnormal cell growth

Answer:
C