A driver with impaired judgment or a driver that is subject to fatigue will be unable to focus and will be a risk to themselves and other drivers upon the road. In this case it would be sensible for the driver to pull-over at the next service station, get some fresh air, have something to eat and a caffeinated drink.
The letter choice C is correct. Vitamins A, D, E, and K are fat soluble <span />
Just anything that you can punch like a pillow or just take a walk around the neighborhood should do. Or talk to friends and have a good time.