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: tidal energy can be used to produce electricity, Fact2: Tidal energy schemes capture water at high tide and release it at low tide., Question: What can be produced by capturing water at high tide? (A) more fish (B) clearer water (C) mussels (D) warm water (E) an image (F) electricity (G) a delta (H) watershred

A: F
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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: Most invertebrates have a nervous system., Fact2: Narcotic analgesics act on the central nervous system to relieve pain., Question: How do most analgesics work on invertebrates? (A) insects (B) kinetic (C) adding heat (D) reduce (E) decrease stamina (F) it needs them (G) Relieve pain (H) protect them

A:
G
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