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: rocks interacting with wind over long periods of time causes weathering, Fact2: On Earth, rocks are weathered by wind and water, creating soil and sand., Question: What causes rocks to weather? (A) seasons (B) force (C) erosion (D) storms (E) water (F) heat (G) lightning (H) gas
[A]: E


[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: Coral reefs provide food and shelter to many ocean organisms., Fact2: Organisms or living beings are literally things that are alive., Question: Coral reefs provide what to many living beings in the ocean (A) Chemical energy (B) salt and water. (C) shelter and amusement (D) survival (E) important habitats (F) food and water (G) water and fun (H) food and shelter
[A]:
H