Final answer:
In geography, a road sign indicating "road ahead makes a gradual curve in the direction of the arrow (right)" means that the road ahead will bend or turn slowly towards the right. Drivers should adjust their speed and position accordingly.
Step-by-step explanation:
In geography, road signs are used to provide information and guidance to drivers. In the case of a road sign indicating "road ahead makes a gradual curve in the direction of the arrow (right)", it means that the road ahead will bend or turn slowly towards the right. This sign is used to alert drivers to prepare for a curved section of road where they need to adjust their speed and position accordingly.