Task: Question Answering
Input (English): A forest was cleared for the building of a resort, but before construction began, secondary succession set in. Which of these describes why secondary succession appeared so rapidly?   
 (A) The clearing allowed mosses to grow quickly. (B) Rock weathering occurred for lichens to grow. (C) Exposed substrates allowed microbes to grow. (D) The soil components remained for plants to grow.
Output (English): D