When traveling at night and encountering another vehicle, what should you do with your headlights?

Answer: B — Dim your high beams

When traveling at night and encountering another vehicle, dimming your high beams is the appropriate action to take. Using high beams can create significant glare for oncoming drivers, which could impair their ability to see the road clearly. By dimming your high beams, you reduce this glare, ensuring that both you and the other driver can see safely. Furthermore, when you switch to low beams, you also maintain your visibility without blinding other drivers. This is crucial for ensuring everyone's safety on the road, as good visual conditions are essential at night. Other options, such as turning off your headlights, using only fog lights, or keeping your high beams on, would not address the safety concerns associated with glare and visibility for oncoming traffic effectively.