Q: 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.
A lumber company plants new trees where a forest once stood. This is an example of  
 (A) conserving resources. (B) consuming resources. (C) recycling resources. (D) replacing resources.
A:
D