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: 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
answer:
D


question:
Fact1: a mirror is used for reflecting light, Fact2: Light seems to travel in rays or beams., Question: what can a mirror be used to reflect? (A) noble gases (B) air particles (C) glass (D) focusing a lens (E) rays or beams (F) photons (G) sun's heat (H) an electron lens
answer:
E


question:
Fact1: Energy enters ecosystems in the form of sunlight or chemical compounds., Fact2: Energy is a basic necessity of an ecosystem., Question: the basic necessity of an ecosystem enters in the form of what? (A) heat (B) recycling (C) trees (D) food (E) sunlight (F) adding heat (G) movement (H) root growth
answer:

E