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").

Q: You're most likely to encounter magma at (A) top of iceberg (B) a cloud (C) a space station (D) an island

A: D
****
Q: When the acid spilled on the plant, the plant began to (A) smoke. (B) sing (C) flower (D) grow

A: A
****
Q: If an object eventually warms, it was exposed to (A) resistance (B) salt (C) moisture (D) sand

A:
A
****