Which of the following would be the best activity to you maintain a healthy skeletal system? a. exercising often and eating a balanced diet b. resting often and receiving proper immunizations c. exercising often and eating only protein for your morning meal d. resting often and eliminating calcium from your diet

The correct answer is option A. "exercising often and eating a balanced diet".

Explanation:

The best recommended activities to maintain a healthy skeletal system are exercising often and eating a balanced diet. For instance, weight-bearing exercises not only help to increase the muscular mass but also help to keep bones strong. While having a balance diet rich in Calcium and vitamin D helps to supply the body with important nutrients for a healthy skeletal system.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times

b.have there own function.