Final answer:
The road sign means that there is a winding road ahead and drivers should drive with caution. Therefore, the correct option is 3.
Step-by-step explanation:
The road sign depicted in the question is a warning sign for a Winding Road.
Winding roads are roads that have many curves or bends, requiring drivers to navigate carefully. This sign is used to alert drivers that there is a winding road ahead and to drive with caution.
For example, imagine you are driving on a road and you see this sign. You should anticipate that the road ahead will have curves or bends and adjust your speed accordingly. This sign is designed to promote safety on the road.
Therefore, the correct option is 3.