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:
Viruses are killed by objects used in a (A) backyard (B) bathroom (C) kitchen (D) living room
answer:
C

question:
speed is a measure of how fast all these move but (A) a person waiting (B) a fish swimming (C) a dog running (D) a bird flying
answer:
A

question:
Humidity is the amount of what vapor in the air? (A) wind (B) humidifier (C) cold (D) h2o
answer:
D