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").

[EX Q]: Fact1: pollutants have a negative impact on the environment, Fact2: Environment and Health Environment and Health All living things depend on their environment., Question: pollutants have a negative impact on all what (A) tractors (B) circulatory systems (C) near the shoreline (D) living things (E) Electrical energy (F) pavement (G) potholes (H) important habitats
[EX A]: D

[EX 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
[EX A]: D

[EX Q]: Fact1: Producers use energy and inorganic molecules to make food., Fact2: Food preparation for retention of nutrients is included., Question: Producers use energy and inorganic molecules for what? (A) neutralizing threats (B) dismissal of nutrients (C) heat produced (D) Transfers energy (E) retention of nutrients (F) decomposition (G) agriculture (H) iron in water
[EX A]:
E