instruction:
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").
question:
which form of transportation has zero emissions? (A) motorbikes (B) speed boats (C) hybrid cars (D) pedal bikes
answer:
D


question:
Which animal travels great distance as part of its instinctive behavior? (A) a raven (B) a bear (C) a chipmunk (D) a snake
answer:
A


question:
Which is most likely a cause of camouflage's effectiveness? (A) a predator's eye sight (B) a predator's sense of hearing (C) a predator's sense of style (D) a predator's poor smelling
answer:

A