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: habitat destruction causes animals to move to find shelter in another habitat, Fact2: All species are threatened due to the destruction of their natural habitat., Question: All species move to find shelter in another what (A) survive (B) streams (C) alluvial (D) habitat (E) coral reef (F) watershed (G) climate (H) loose soil
[A]: D


[Q]: 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
[A]: G


[Q]: Fact1: contact between rocks over long periods of time causes rocks to smooth, Fact2: Rocks on the streambed are subrounded and fairly smooth., Question: Contact between rocks over long periods of time causes rocks to be what? (A) coiled (B) homogenous (C) inactive (D) subrounded (E) dormant state (F) barrel-shaped (G) erosion (H) threatened
[A]:
D