Teacher:In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Teacher: Now, understand the problem? Solve this instance: Fact1: a delta is formed by deposition of sediment at the mouth of a river by water fanning out, Fact2: When the river slows, it drops the sediment in a wide fan, a delta., Question: Sediment is dropped at the mouth of a river by water when what happens? (A) Destroy bridges (B) erosion (C) global warming (D) rivers slow (E) flooding (F) contamination (G) massive damage (H) storms
Student:
D