Answer:
a) cardiorespiratory endurance
Step-by-step explanation:
Based on the information provided within the question it can be said that the ability that is being described is best known as Cardiorespiratory endurance. This (like mentioned in the question) is the ability of both of these systems to supply oxygen to the muscles of the body in order to sustain physical activity, as well as also improving lung and heart conditions of the body.