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").

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
D

Fact1: Insects may live in large colonies and have complex social behaviors., Fact2: Ants are social insects living in colonies., Question: which of the following are known to have complex social behaviors? (A) dogs (B) Wasps (C) tigers (D) Birds (E) toads (F) Tasmanian devils (G) koalas (H) Ants
H

Fact1: Playing is one way mammals and other animals learn how to behave., Fact2: Dogs, of course, are mammals., Question: Playing is one way what learns how to behave? (A) bacteria (B) Man (C) roaches (D) koalas (E) dogs (F) humans (G) toads (H) bears
E