This sign indicates the place from which...
A)the obligation to drive at more than 30 km/h begins.
B)the recommendation to drive at more than 30 km/h ends.
C)the obligation to drive at, at least, 30 km/h ends.Correct
# Explanation
This sign is the **end of mandatory minimum speed of 30 km/h sign**. It indicates the place where the **obligation ends** for drivers to travel at a minimum speed of 30 km/h. From this point on, drivers are no longer obliged to maintain that minimum speed, although they must still respect the established maximum speed limits.