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").

Drinking cola daily removes layers from the surface of (A) enamel on molars (B) spoons (C) porcelain (D) the coffee pot
A

A person in a suit near a sunken ship is sprayed in the face with a dark substance by (A) a cephalopod (B) a bear (C) a hose (D) a pencil
A

Which is likely to cause a spark? (A) ocean sand (B) wet dirt (C) swamp mud (D) loose brush

D