This sign is used to warn drivers that:

The right lane is ending and traffic should merge left.
The road curves ahead.
There are upcoming intersections.
The Correct Answer and Explanation is :
The correct answer is: The right lane is ending and traffic should merge left.
Explanation:
The image shows a traffic sign indicating that the right lane is ending. This type of sign is typically used to alert drivers that a lane will soon disappear, requiring them to merge into the remaining lanes. The symbol on the sign, with a large arrow pointing down and a smaller arrow to the left, clearly indicates that traffic must shift left to continue forward.
The purpose of this warning is to prevent accidents caused by last-minute lane changes and to ensure smoother traffic flow. By signaling in advance that the right lane will end, drivers have time to adjust their speed and merge safely. This is particularly important in areas where traffic density is high, as sudden lane changes without proper warning can lead to collisions.
In general, lane-ending signs are posted in advance of areas where a lane reduction occurs, such as highway exits, construction zones, or areas where traffic merges from multiple lanes into fewer lanes. Drivers should always be prepared to yield to others when merging, as it helps maintain traffic flow and safety.
It is important for drivers to follow this warning and not wait until the last moment to merge. Proactive lane changes allow traffic to move efficiently and reduce the likelihood of bottlenecks or accidents. In addition, adhering to the proper lane-merging etiquette ensures fairness, where all vehicles are given the opportunity to enter the remaining lanes without cutting off or forcing others out of their way.