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").

[EX Q]: Animals adapt to their what? (A) appearance (B) feet (C) skin (D) nature places
[EX A]: D

[EX Q]: Once the grounds frost over and the air grows chilled (A) beaches are opened (B) humans go naked (C) birds lay eggs (D) roses die
[EX A]: D

[EX Q]: If a high percentage of water is visible in the air? (A) this is called heat and it is unsafe to drive in (B) this is called fog and it is safe to drive in (C) this is called heat and is safe to drive in (D) this is called fog and is unsafe to drive in
[EX A]:
D