Final answer:
In foggy conditions, low beam headlights should be used to enhance visibility and reduce glare. Using high beams can increase glare because of the fog, and it's unsafe to use no lights or hazard lights while driving.
Step-by-step explanation:
In foggy conditions, you should use your car's low beam headlights. High beam headlights can reflect off the fog and create glare, which reduces visibility. The use of low beam headlights produces light with a longer wavelength, which is less likely to be scattered by water droplets in the fog, providing better visibility. Hazard lights should only be used if you're stopped or moving very slowly, as they can confuse other drivers if used while driving at normal speeds. Using no lights is not advisable as it makes your vehicle invisible to other drivers. It's also important to mention that some cars are equipped with fog lights, which are specifically designed for use in foggy conditions and can improve visibility without causing glare.