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: some animals' fur grows thicker for staying warm in the winter, Fact2: During winter, their hollow fur absorbs much heat as they sun themselves., Question: hollow fur keeps animals what (A) fats (B) camouflaged (C) safe (D) warm (E) cooled (F) liquid (G) live (H) from drowning

A: D
****
Q: Fact1: if a thermal conductor is exposed to a source of heat then that conductor may become hot, Fact2: Copper is a great thermal conductor., Question: What becomes hot when exposed to a source of heat? (A) rubber (B) wool (C) an object (D) copper (E) paper (F) sugar (G) the skin (H) our star

A: D
****
Q: Fact1: Some parasites live on the surface of their host., Fact2: Leeches are external parasites., Question: Where do leeches live in relation to their hosts? (A) In their beds (B) body water (C) competing for resources (D) In their shoes (E) loose soil (F) In their intestines (G) important habitats (H) On their surface

A:
H
****