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:
Drinking cola daily removes layers from the surface of (A) enamel on molars (B) spoons (C) porcelain (D) the coffee pot
answer:
A


question:
What will air usually do when heated up beyond a certain point? (A) it will fall (B) it will remain (C) it will ascend (D) it will die
answer:
C


question:
A baby chick hatches and recognizes the mother bird above it from (A) the worms it ate (B) the birds it discovered (C) the warmth it provided (D) the leaves it saw
answer:

C