Question

Increased breathing rate involves

• A. Greater production of energy
• B. Greater amount of oxygen
• C. Greater blood flow
• D. Both A and B

Answer 1

The correct option is D Both A and B

Breathing rate is defined as the no. of times a person breathes in a minute. Breathing rate increases during physical exercise. During that time the body requires a higher amount of oxygen and metabolism.

So the correct answer is 'Both A and B'.