Question

what is vital capacity? inspiratory reserve volume plus total lung capacity; residual volume minus expiratory reserve volume; total lung capacity minus residual volume; tidal volume plus inspiratory reserve volume

Explanation:

Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is calculated as the total lung capacity minus the residual volume. Residual volume is the amount of air that remains in the lungs after a forced exhalation, and total lung capacity is the total volume of air in the lungs after a maximum inhalation.

Answer:

Total lung capacity minus residual volume