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").

Which is nonmagnetic? (A) nail (B) washing machine (C) traffic cone (D) refrigerator
C

This animal thrives while the sun is down (A) the bull shark (B) the snowy owl (C) the prairie dog (D) the spotted giraffe
B

wildfire occurs when (A) being environmental is considered hot (B) someone smokes near a forest (C) condensed tree areas are ablaze (D) tree patterns are similar to fire

C