When should the windshield wiper blades be replaced?

When should the windshield wiper blades be replaced?
A)Every two years, mandatorily.
B)Always before passing the vehicle's technical inspection.
C)When the rubber is damaged.Correct
The windshield wiper blades should be replaced **when the rubber is damaged**, cracked, or worn, since their function is essential for the driver's safety and visibility. There is no fixed mandatory two-year period; rather, replacement depends on the actual condition of the rubber and the weather conditions of each area. Regular preventive maintenance ensures effective cleaning of the windshield in any situation.