instruction:
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").
question:
Fact1: knowledge of the stars can be used to navigate, Fact2: Of course, astronomers also study stars., Question: What can be used to navigate? (A) music (B) backbones (C) astrology (D) cilia (E) magic (F) sponges (G) astronomy (H) lamphreys
answer:
G


question:
Fact1: Most mollusks have shells., Fact2: All mollusks have soft bodies., Question: What can shells protect? (A) fronts (B) animals (C) soft bodies (D) coastlines (E) fur (F) blood (G) critical organs (H) hard bodies
answer:
C


question:
Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Beavers are primarily aquatic animals., Question: Which animal requires great amounts of water to survive? (A) amphibians (B) Frogs (C) bullfrogs (D) Beavers (E) Jellyfish (F) mussels (G) trout (H) sharks
answer:

D