You will be given a definition of a task first, then some input of the task.
You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.

Changes to abiotic factors in an environment can impact biotic factors. Which statement is the BEST example of this situation?
(A) Heavy rainfall increases soil erosion. (B) Melting glaciers cause sea levels to rise. (C) Cold temperatures cause rocks to weather. (D) Drought conditions increase competition among consumers.
Output:
D