TASK DEFINITION: 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").
PROBLEM: 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

SOLUTION: A

PROBLEM: Fact1: most canyons are formed by flowing rivers through erosion over long periods of time, Fact2: Canyon formed as a consequence of river erosion., Question: what does erosion form? (A) valleys (B) Sediment (C) mountains (D) canyons (E) soils (F) hills (G) soft soil (H) loose soil

SOLUTION: D

PROBLEM: Fact1: coal is used for generating heat by burning, Fact2: CO 2 and SO 2 are both given off when coal is burned to provide heat or to generate electricity., Question: When is coal burning _ is given off (A) CO 2 (B) energy (C) vaporization (D) SO2 (E) pollution (F) oxygen (G) carbon (H) smoke

SOLUTION:
A