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]: Pollution is (A) throwing a gum wrapper in the ocean (B) trees in a forest (C) Fish swimming in the sea (D) The wind carrying seeds
[EX A]: A

[EX Q]: Flora requires chlorophyll to (A) moonlight (B) undergo natural development (C) starlight (D) dairy
[EX A]: B

[EX Q]: if two students of equal strength pull a double sided cup in opposite directions, what will happen? (A) the cup will remain stationary (B) the one on the right will have it (C) the cup will change color (D) the one on the left will take it
[EX A]:
A