Part of the reason for accelerated breathing rates during aerobic exercise is the

A) reduced amount of blood circulating throughout the body during exercise.
B) buildup of lactic acid in working muscles.
C) increase of oxygen in the blood.
D) increase of carbon dioxide in the blooD.

Accelerated Breathing Rates

An increase in the pace at which an individual breathes, often a response to exercise or stress.

Lactic Acid

A substance produced in the muscles during intense exercise, often associated with muscle fatigue and soreness.

Carbon Dioxide

A colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air and is absorbed by plants in photosynthesis.