Given the task definition and input, reply with output. Given a scientific question and its correct answer, generate supporting facts for the answer. This supporting fact can be an explanation for the answer to the given question.

Question: What muscle is imperative to breathing in helping the air move in and out of the lungs? Answer: diaphragm

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
Breathing is the process of moving air into and out of the lungs. It depends on the muscle called the diaphragm.