Option A. 2
If you enter the mountain road from a driveway, alley, or curb, you must give way to vehicles already on the main road. When overtaking a vehicle traveling in the same direction, you must avoid it, even if it slows down or stops.
Who approaches the crest of a hill you should never cross the center line?
It's easier to drive on a two-lane road because you can clearly see the oncoming traffic. When approaching a ridge, never cross the centerline.
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