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]: Amphibians undergo changes in structure of being in that (A) salamanders can regrow their tails (B) salamanders can lose their tails (C) frogs can breathe air and water (D) they begin as a different looking being
[EX A]: D

[EX Q]: If a person restores a garden complete with oaks, then they have replaced (A) concrete (B) jelly (C) steam (D) a resource
[EX A]: D

[EX Q]: Compost, small rocks, and organic material make up (A) air (B) stone (C) land (D) water
[EX A]:
C