What is the recommended action when driving in foggy conditions?

Answer: B — Use low-beam headlights and reduce speed

Using low-beam headlights and reducing speed is the recommended action when driving in foggy conditions because fog can severely limit visibility. Low-beam headlights are designed to illuminate the road directly in front of the vehicle without causing glare that can reflect off the fog, which often happens with high beams. The reduced visibility in fog means that driving slower allows for more reaction time, which is crucial in case of sudden obstacles or changes in traffic conditions. Additionally, reducing speed enhances safety by allowing the driver to have better control of the vehicle in potentially slippery conditions. Fog increases the risk of accidents, so maintaining a safe speed, along with using the appropriate headlights ensures that drivers can see and be seen by others. This approach minimizes the chances of collision and improves overall safety for both the driver and other road users.