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 plane travels through what? (A) gas layers (B) plains (C) oceans (D) time
answer:
A


question:
Thick feathers can be used for (A) climbing, cracking nuts and peeling fruit skins. (B) courtship and looking for food (C) killing prey, preening and feeding young (D) staying weatherproof, flexible and free of bacteria
answer:
D


question:
A person takes buckets of water from the house and begins to add it to a pond in the yard. After a certain point, the pond (A) bloats (B) breaks (C) sinks (D) drowns
answer:

A