Final answer:
A proper head check while driving involves checking blind spots, looking over shoulders, and using side mirrors to see behind. Keeping your head still at all times is not part of a proper head check while driving. Option A is correct.
Step-by-step explanation:
A proper head check while driving involves checking the blind spots around your vehicle, turning your head to look over your shoulders, and using your side mirrors to see behind you. Keeping your head still at all times is not part of a proper head check while driving as it is important to constantly be aware of your surroundings by checking your blind spots and using your mirrors.