In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

Q: the alps were formed by rock what? (A) growing (B) melting (C) erupting (D) creasing

A: D
****
Q: Pollution is (A) throwing a gum wrapper in the ocean (B) trees in a forest (C) Fish swimming in the sea (D) The wind carrying seeds

A: A
****
Q: Chimpanzees dig for insects with sticks; what is another example of using tools? (A) birds using twigs to build nests (B) otters using rocks to open clams (C) anteaters using their tongue to catch ants (D) koalas using their pouch to hold infants

A:
B
****