This is very true all of the above
Respiratory rate is measured by counting the number of breaths a person takes in a one-minute period. Since many factors can affect the results, understanding how to take an accurate measurement is very important.
The rate should be measured at rest, not after someone has been up and walking about. Being aware that your breaths are being counted can make the results inaccurate, as people often alter the way they breathe if they know it's being monitored.
Answer:
I think your answer is either the chain crew or the first down markers.(the chains that the chain crew hold to mark the first down.)
Explanation:
B or D pretty sure it's D though
