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 one way mammals and other animals learn how to behave., Fact2: Opossums are a type of mammal called marsupials., Question: what plays to learn how to behave? (A) opossums (B) humans (C) people (D) fish (E) exercise (F) ants (G) h2o (H) catabolism
[A]: A


[Q]: Fact1: hydropower requires damming a river, Fact2: Hoover Dam, the first dam on the Colorado River below Grand Canyon, was built between 1931 and 1935., Question: Which of these produces hydropower? (A) deuterostomes (B) Wind Turbines (C) power stations (D) Suez Canal (E) trout (F) Old Faithful Geyser (G) Hoover Dam (H) stations
[A]: G


[Q]: Fact1: Ozone depletion results in higher levels of UV radiation reaching Earth., Fact2: Solar UV radiation levels are highest during the middle of the day., Question: Ozone depletion results in radiation levels that are highest when? (A) middle of the day (B) forest is destroyed (C) late evening (D) Under 32 degrees (E) middle of the night (F) Temperature changing (G) Plant growth is reduced (H) early morning
[A]:
A