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:
A person yells inside a garage. Their voice echoes and they hear (A) a bird chirping away (B) a dog barking loudly (C) a car engine rev (D) a shout repeating softer
answer:
D


question:
What is a source of oxygen through photosynthesis? (A) lakes (B) car engines (C) sunflowers (D) people
answer:
C


question:
As watering holes dry up more animals will (A) die (B) move in (C) join together (D) dig wells
answer:

A