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: Playing is just one of many ways that mammals and other animals learn how to behave., Fact2: Acting is about behaving., Question: What is one of the ways that mammals and other animals learn how to act? (A) sleeping (B) Movement (C) mating (D) exercise (E) eating (F) sound (G) playing (H) motion
[A]: G


[Q]: Fact1: Evolution is a change in the characteristics of living things over time., Fact2: Trees are the largest of living things., Question: Evolution changes the characteristics of what over time? (A) the Moon (B) Man (C) life (D) trees (E) rocks (F) the Sun (G) humans (H) plants
[A]: D


[Q]: Fact1: the gravitational pull of the Moon on Earth 's oceans causes the tides, Fact2: For example, ocean tides are caused by the sun and moon's gravity pulling on the water., Question: What causes tides? (A) waves (B) sunlight (C) Mass (D) moon (E) weight (F) force (G) wind (H) asteroid
[A]:
D