Driving on a road with heavy traffic...

Driving on a road with heavy traffic...
A)delays the onset of fatigue.
B)is not a circumstance that affects fatigue.
C)promotes the onset of fatigue.Correct
Anything that demands a high level of concentration from the driver or that makes driving more uncomfortable will cause them to tire sooner and will increase the onset of fatigue.
Driving on a road with heavy traffic promotes the onset of fatigue because it requires greater concentration to drive. Traffic jams also promote the onset of fatigue, as they can cause stress, and stress produces fatigue.