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: Biodiversity increases the productivity and stability of ecosystems., Fact2: Ecotourism, on the other hand, can help to conserve biodiversity., Question: What increases the stability of ecosystems? (A) overpopulation (B) water consumption (C) loose soil (D) Quality of life (E) agriculture (F) deforestation (G) ecotourism (H) trees
[A]: G


[Q]: Fact1: unequal heating of Earth 's surface by the Sun causes global wind patterns, Fact2: Unequal absorption of radiation causes unequal heating of the earth's surface., Question: heating causes the wind patterns on earth to be what? (A) evenly distributed (B) waves (C) equal (D) constant (E) threatened (F) supersonic (G) unequal (H) Tropical
[A]: G


[Q]: Fact1: riding a bike does not cause pollution, Fact2: City employees use bicycles on the job to save energy and reduce air pollution., Question: Riding a bike reduces what? (A) energy usage (B) Greenhouse gasses (C) acid rain (D) harmful substances (E) Greenhouse gases (F) temperature (G) prolactin release (H) storms
[A]:
A