Final answer:
Tidal volume is the volume of air inhaled in a single normal breath and typically averages 500 mL.Hence, the correct answer is option 1.
Step-by-step explanation:
The tidal volume typically averages 500 mL. Tidal volume is the amount of air that is inspired and expired during normal breathing. In comparison to other lung volumes and capacities, such as the total lung capacity of approximately six liters for an adult male, tidal volume is relatively small. It is an essential factor for pulmonary function and a measure that is often taken into consideration during clinical assessment of respiratory health.