Normal respiratory rate per minute for an adult at rest is:

Correct option is A

Sol. The normal respiratory rate for an adult at rest typically ranges from 12 to 20 breaths per minute. This rate can vary depending on factors such as age, physical condition, and health status.
Explanation of each option:
· (a) 12 to 20 breaths – Correct answer. The normal respiratory rate for a healthy adult at rest is between 12 and 20 breaths per minute.
· (b) 10 to 14 breaths – This is a lower range than the typical normal rate. A rate this low could indicate respiratory issues.
· (c) 10 to 20 breaths – This range is not completely incorrect, but it is broader than the typical 12 to 20 breaths per minute for a normal resting adult.
· (d) 15 to 25 breaths – This range is slightly higher than the normal rate. A rate this high may indicate anxiety, exertion, or other respiratory conditions.