Answer and Explanation:
Split system training is a program of weight training that divides training sessions by body regions—usually upper- and lower-body training. For example, your weight training program includes a lower-body split on Tuesdays and an upper-body split on Thursdays.
I think it might be d. the lungs expand and contract which increases the rate of blood flow so the muscles can convert and store energy
Your tone of voice should be friendly, professional, and sincere to keep a patient engaged. Improving your tone can be as simple as smiling, taking a deep breath, and approaching with a genuine desire to help.
