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").

Rubber can protect from (A) cold (B) burns (C) electricity (D) fire
C

adding a direct flame to container of acid causes a (A) dormant cycle (B) lot of nothing (C) lower temperature (D) vapor expulsion
D

If sound is moving around in a room, the room is lacking in (A) atmosphere (B) vacuum (C) oxygen (D) air

B