Volume of air inspired or expired during normal respiration is called
Dead Space
Inspiratory Reserve Volume (IRV)
Residual Volume (RV)
Tidal Volume (TV)
Respiratory Volumes -
Tidal Volume (TV): Volume of air inspired or expired during normal respiration. It is approx. 500 mL., i.e., a healthy man can inspire or expire approximately 6000 to 8000 mL of air per minute.
Hence, the correct option is d. Tidal volume