Which component is essential to inspect for safety before driving a commercial vehicle?

Windshield wipers are a critical component to inspect for safety before driving a commercial vehicle because they play a vital role in maintaining visibility during adverse weather conditions, such as rain or snow. Effective windshield wipers ensure that the driver can see the road clearly, which is essential for safe driving. Poor visibility can lead to dangerous situations, increasing the risk of accidents.

While air fresheners and seat covers may enhance comfort or aesthetics, they do not contribute to the vehicle's safe operation. Dashboard lights, although important, typically indicate the status of the vehicle's systems rather than directly affecting driver visibility and safety during driving. Therefore, prioritizing the inspection of windshield wipers directly supports the critical need for clear visibility and safe driving practices.