Final answer:
To minimize the effect of the glare and maintain visibility when an oncoming vehicle fails to dim their high beams, look towards the right edge of the road.
Step-by-step explanation:
When the driver of an oncoming vehicle fails to dim their high beams, you can minimize the effect of the glare and maintain visibility by looking to the right edge of the road. By looking towards the right side of the road, you can avoid direct contact with the oncoming vehicle's high beams and reduce the glare that affects your visibility. This allows you to still have a clear view of the road and maintain your safety while driving.