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 bird is about to lay an egg, so it needs to construct a safe, round place to place the egg in. The bird constructs using (A) sticks (B) gum (C) rocks (D) tape
A

The natural illumination outside will be for shorter and shorter periods of time per day when (A) during a solar eclipse (B) spring season has begun (C) a hurricane is approaching (D) in late September north of the equator or late March south of the equator

D