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: fossils are formed when layers of sediment cover the remains of organisms over time, Fact2: Fossils are evidence of prehistoric life that is preserved in rock., Question: Prehistoric life is preserved in rock when what covers the remains over time? (A) Plant growth is reduced (B) an amoebae (C) layers of sediment (D) single-celled organisms (E) loose soil (F) layers of fungus (G) layers of bone (H) layers of mucus
Student:
C