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When driving in fog, you should use

  1. Parking lights

  2. Low beams

  3. High beams

  4. Spot lights

The correct answer is: Low beams

During foggy conditions, visibility is impaired. The use of high beams or parking lights can further reduce visibility by reflecting off the fog and causing a glare. Using low beams will provide adequate lighting while preventing glare and allowing other drivers to see you. Spotlights are also not recommended as they can cause too much contrast in visibility.