The correct answer is letter C, Determining your VO2 Max is the best measure of cardiorespiratory fitness. VO2Max is the maximum volume of oxygen that a person can intake during bouts of exercise. There is actually a specific machine that measures the volume of oxygen intake a person can do during an activity. It is usually done in labs and in a controlled set-up.
The use of pedometers benefited people at high risk for type 2 diabetes because when told they had to walk 10,000 steps they thought it was impossible but once they saw how much steps they did doing regular everyday things it seemed easy to accomplish 10,000 steps.
The answer is D “Plaque can build up and prevent oxygen from reaching the brain”.