What should be your primary focus when driving at night to minimize glare from oncoming vehicles?

Answer: B — Look at the right side of the road

Focusing on the right side of the road is essential when driving at night to minimize glare from oncoming vehicles. This technique helps to reduce the impact of bright headlights from other cars, allowing your eyes to adjust better to the darkness and maintain visibility of the road ahead. By directing your gaze to the right side, you can still be aware of the lane markings and other important visual cues without being blinded by the high beams of oncoming traffic. Additionally, adjusting the rearview mirror can help reduce glare, but it does not address the immediate issue of oncoming headlights. Turning on interior lights is not advisable as it can create additional glare inside the vehicle, making it harder to see the road. Lastly, using high beams at night is only appropriate when there is no oncoming traffic, as they can significantly worsen glare for other drivers.