What is the average cardiac output at rest?

The average cardiac output at rest for a healthy adult is typically around 4,000 to 5,000 mL/min, which aligns with the option indicating 4900 mL/min. Cardiac output is the volume of blood the heart pumps per minute and is an important indicator of cardiovascular health and overall fitness.

At rest, the body does not require an extremely high volume of blood flow, as metabolic demand is lower than during exercise. Therefore, the typical range tends to fit within the aforementioned values. This makes 4900 mL/min a reasonable estimate for average resting cardiac output.

In contrast, the other figures presented are significantly higher than what is considered average for a resting state. A cardiac output of 22800 mL/min or 34200 mL/min would surpass the maximum output physically feasible for the human heart under normal circumstances, even during intense exercise. The value of 120 mL/min is also far too low to meet the physiological needs of a resting adult. This further reinforces that 4900 mL/min is the most accurate measure of average cardiac output at rest.