Consider the question. Sally raked up leaves that had fallen to the ground. She added them to something. What did she add them to?
Options:
- trees
- ground
- forrest
- blower
- compost pile
 What is the step-by-step reasoning process to arrive at the answer: compost pile?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Compost pile is a pile of garden and organic kitchen refuse which decomposes to produce compost. Sally raked up leaves that had fallen to the ground. She added them to something. She add them to compost pile.