Answer :
The choice that best represents a long-term benefit of cardiorespiratory fitness would be that it provides a more efficient delivery of oxygen to the muscles - D. This is very important if we're doing daily chores that are slightly difficult as it enables us to live our lives better.
The answer choice D is correct because as we become more active then our bodies have more of a demand for oxygen and as we intake more oxygen then it moves faster and more efficently throughout our bodies allowing it to reach all of our muscles