What should a driver anticipate when encountering a sign indicating "merging lanes"?

Answer: D — Road curves right

A "merging lanes" sign indicates that two lanes of traffic are going to combine into one. This situation typically requires drivers to adjust their speed and position to allow for smooth merging. Anticipating this means being alert to the possibility of vehicles merging from a lane into your lane, which can often happen in a rightward direction but is not exclusively pertinent to just right turns. While it’s true that signs indicating curves or winding roads are important for safety, they specifically denote changes in the road's direction or design instead of a merging situation. Understanding the context of a merging lanes sign helps ensure safety by prompting drivers to be more cautious and aware of their surroundings, particularly regarding other vehicles that may be adjusting their positions onto the same roadway.