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").

[Q]: Gas can fill any container it is given, and liquid (A) is standard weight and size (B) is the opposite of variable (C) only needs a few (D) uses what it needs
[A]: D


[Q]: When the acid spilled on the plant, the plant began to (A) smoke. (B) sing (C) flower (D) grow
[A]: A


[Q]: A smack on a wooden board can be heard a mile away (A) because sound travels through oxygen (B) because of how sound works (C) because vibration can move (D) because sound vibrates through atmosphere
[A]:
D