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").

[Q]: Someday, the ground under the pile of rotting grain in the field will be (A) barren (B) a hole (C) more fertile (D) less fertile
[A]: C


[Q]: The sidewalk next to a house having a crack in it and having vegetation growing from it is considered? (A) insects (B) weathering (C) erosion (D) lava
[A]: B


[Q]: The material that makes up iron nails is known as what on the table of elements? (A) Nail. (B) Fe (C) Copper (D) Au
[A]:
B