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]: An echo is produced by what type of reflection of sound source? (A) Direct (B) Distant (C) Varied (D) Single
[A]: D


[Q]: Which would a strawberry most rely on to ensure it gets planted? (A) a fish (B) a canary (C) a penguin (D) a tiger
[A]: B


[Q]: A change on our planet could be (A) cats eating mice (B) forests becoming lakes (C) clouds raining (D) deer running
[A]:
B