Question

the normal range of breathing rate per minute of an average adult person at rest is
9 - 12 ,
15-18,
21-14,
20-33​

Answer 1

The normal range of breathing rate per minute of an average adult person at rest is 15-18

Answer 2

15 - 18

Explanation:

The normal range of breathing rate per minute of an average adult person at rest is 15 - 18