Concept:Tidal Volume (TV) is the volume of air that is inhaled or exhaled during a normal breath when a person is at rest.
It is one of the important parameters used to measure lung function.
Step 1: Define tidal volume.
Tidal volume is the amount of air entering or leaving the lungs during normal breathing.
Step 2: State the normal value.
In a healthy adult human, the normal tidal volume is approximately
\[
500 \text{ mL}
\]
Step 3: Select the correct option.
\[
\boxed{500 \text{ mL}}
\]