Question

question 8 (5 points) listen which system should stephanie improve to increase her aerobic fitness level? a) cardiovascular system b) respiratory system c) nervous system d) cardiorespiratory system

Explanation:

Aerobic fitness involves the body's ability to use oxygen efficiently. The cardiorespiratory system (heart, blood vessels, and lungs) is responsible for transporting oxygen to cells during aerobic activities. Improving this system enhances oxygen delivery and utilization, which is key to increasing aerobic fitness. The cardiovascular system (A) focuses mainly on the heart and blood vessels, the respiratory system (B) on the lungs, and the nervous system (C) on transmitting signals. The cardiorespiratory system (D) combines both heart - lung functions essential for aerobic fitness.

Answer:

D. Cardiorespiratory system