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: sandpaper is used to smooth wooden objects, Fact2: All objects, even wooden tables, are made up of molecules which vibrate to create their mass., Question: What can be used to smooth a table? (A) Wax paper (B) Sponge (C) lamphreys (D) Tissue (E) Sandpaper (F) scratching it (G) keratin (H) tiny hairs

A: E
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Q: Fact1: soil is formed by rocks eroding, Fact2: Rivers erode the rocks they flow over., Question: What is formed by rivers? (A) fish (B) soil (C) rain (D) bamboo (E) spring (F) clouds (G) kayaks (H) NaCl

A: B
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Q: Fact1: Air pollution harms the respiratory and circulatory systems., Fact2: Air pollution is caused by lots of different pollutants., Question: What systems are pollutants bad for? (A) destroying life (B) classification system (C) an organism's body (D) respiratory and circulatory (E) animal habitats (F) ambulatory systems (G) social security system (H) the environment

A:
D
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