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]: What displays the movement of electrons from the base atoms? (A) venus (B) mercury (C) plasma star (D) pluto
[EX A]: C

[EX Q]: Which event can lead to the human caused change of an environment? (A) seasonal storms (B) annual flooding (C) natural woodland fires (D) clear cutting
[EX A]: D

[EX Q]: An herbivore like a giraffe will only consume (A) green matter (B) sticks (C) algae (D) cheese
[EX A]:
A