When you say "protection from harm system," I assume you mean the Integumentary system. It's job is to protect the body from various kinds of damage. Hope this helped! :)
I personally think C because your focused on someone else not yourself so it makes you not think of your stress for that period of time.
There are four _______ in planning an exercise program.
Answer: Out of all the options that are presented above the one that completes the statement and makes it true is variables. Therefore: There are four variables in planning an exercise program. Frequency, mode, intensity, and duration.
I hope it helps, Regards.
A. Increased quality of health care.
I'm not 100%, but im pretty sure that's it.
