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").

Why would a lightbulb be dark? (A) the bulb needs to be charged (B) the room is too bright (C) the circuit is incomplete (D) it ran out of electricity
C

harming an animal species causes that animal 's population to do what? (A) explode (B) rise (C) plummet (D) burst
C

You can scuff your socked feet on a shag carpet and shock a friend because of (A) electromagnetism (B) electric youth (C) bad breeding (D) gravity

A