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: Insects may live in large colonies and have complex social behaviors., Fact2: Like other ants, the fire ant is a social insect., Question: What may live in large colonies? (A) animals (B) tigers (C) tardigrades (D) fire ants (E) bears (F) honeybees (G) orchids (H) graptolites

A: D
****
Q: Fact1: the Himalayas were formed by rock folding, Fact2: Movements in the earth's crust have folded and cracked the older rocks., Question: the Himalayas were formed from older what (A) soils (B) plates (C) rivers (D) rock (E) eras (F) meadows (G) dirt (H) plains

A: D
****
Q: Fact1: Roots have primary and secondary meristems for growth in length and width., Fact2: Secondary meristems develop after primary meristems., Question: What do roots have? (A) allow growth (B) resistance (C) Sediment (D) meristems (E) layers of fat (F) Energy (G) storing water (H) alveoli

A:
D
****