Question

ones brain keeps track of sleep debt for a period of about: one week. five days. two weeks. one month.

Explanation:

Research in sleep science (a sub - field of Medicine and Health in Natural Science) indicates that the brain has a mechanism to track sleep debt. Studies have shown that this tracking period is approximately one week. During this time, the body and brain "remember" the lack of sleep and try to make up for it.

Answer:

one week.