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").

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
C

When is hotter? (A) desert (B) night (C) morning (D) noon
D

A person has a restaurant where they have a salad bar. The salad bar is packed with ice to keep food cold. The ice may last longer if (A) the room is warm (B) salt is heavily applied (C) people eat the food (D) food is already warm

B