What is the normal respiratory rate in adults measured in breaths per minute?

• A. 10
• B. 12
• C. 16
• D. 20

Answer: (B)

The normal respiratory rate for adults generally ranges from 12 to 20 breaths per minute, with an average of around 16 breaths per minute typically cited as a standard benchmark. This range is considered normal because it reflects the body's metabolic demands and ensures adequate oxygen supply and carbon dioxide removal during rest. Various factors can influence respiratory rate, including activity level, health conditions, and emotional state, yet a rate of 12 breaths per minute is widely accepted as being on the lower end of the normal range while still remaining within acceptable limits. This understanding is essential for assessing patient health, identifying potential respiratory issues, and providing appropriate care.