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]: A light using energy can cease that activity when (A) light bulbs are gold (B) lights are always on (C) wall switch is adjusted (D) walls are painted blue
[EX A]: C

[EX Q]: Digestion is when stomach acid breaks down what? (A) food essays (B) sustenance (C) water (D) air
[EX A]: B

[EX Q]: if an animal skips the pupa stage in its metamorphosis, what does that characterize? (A) a process of incomplete transition (B) a very passive metamorphosis (C) a true and complete metamorphosis (D) a very aggressive metamorphosis
[EX A]:
A