Answer :
According to the question a check of vital signs includes the taking and recording of is respiratory rate.
What is the formula of respiratory quotient?
The respiratory quotient (RQ) is defined as the proportion between the release of carbon dioxide and the oxygen consumption, which is one of the indices of metabolic function estimation.
Thus, option "A" is correct.
To learn more about respiratory quotient click here:
https://brainly.com/question/13092950