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]: A tone is made when a hammer makes contact with (A) a waterfall (B) air (C) an solid object (D) a log
[A]: C


[Q]: A ship navigates with a magnetic compass because it is (A) predictable (B) unpredictable (C) waterproof (D) tradition
[A]: A


[Q]: When we are unable to look up and see the sun during the day it is blocked by (A) lava (B) seashells (C) rocks (D) water
[A]:
D