How should a driver react when following another vehicle within 200 feet?

When following another vehicle within 200 feet, a driver should dim their headlights. This is important because using high beams can create glare for the driver of the vehicle ahead, making it difficult for them to see clearly. Dimming the headlights reduces this glare and is a courteous and safe practice. It enhances visibility for both drivers and minimizes the risk of an accident caused by temporary blindness from bright lights.

The other options are less appropriate in this context. Using high beams would directly impair the vision of the car in front, potentially leading to safety hazards. Turning off headlights altogether could create a severe safety issue, as it would result in a lack of visibility not just for the driver in question but for everyone on the road. Using fog lights is also not suitable in this scenario, as fog lights are intended for low-visibility conditions but can have the same glaring effect as high beams when following another vehicle. Thus, dimming headlights is the safest and most responsible option.