Answer: Integumentary.
Explanation:
The integumentary system is the system that protects the body from damage such as loss of water or abrasion from outside. For example, nails, hair, skin, etc.
Decreasing the intensity of the workout gradually
A, B, and possibly D. It can be A because her goal is possibly achievable and it's B because it's a very specific goal. It's hard to measure how good someone is at cooking and when they're ready to charge money. It isn't really realistic because she doesn't know how to cook already. Her goal is not time specific.