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").

Grooves in the ground are a sign of (A) sink holes (B) erosion (C) water accumulation (D) high traffic
B

A thermal insulator slows the transfer of what? (A) warmness (B) light (C) energy (D) liquid
A

Which is true (A) an anemometer would measure a tropic front (B) an anemometer would measure thunder (C) an anemometer would measure a rainbow (D) an anemometer would measure a lightning bolt

A