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").

[EX Q]: An example of a house hold item that could be an insulator could be (A) Diamonds (B) Silver (C) Gold (D) Tupperware
[EX A]: D

[EX Q]: Which has molecules? (A) a Popsicle (B) suicide (C) therapy (D) thoughts
[EX A]: A

[EX Q]: A beaver is building a home in a river, and that eventually blocks up the river, giving the beaver a nice home. A side effect of the beaver's new home is (A) a pool (B) freshwater body (C) a mountain (D) an ocean
[EX A]:
B