Which of the following is a requirement for competing in truck driving competitions?

Answer: C — Must hold a CDL with proper endorsements

Holding a Commercial Driver's License (CDL) with proper endorsements is essential for competing in truck driving competitions because these events typically require participants to demonstrate a high level of skill and knowledge in handling commercial vehicles. A CDL ensures that drivers have undergone the necessary training and testing to understand the complexities of operating large trucks, including safety regulations, vehicle control, and maneuvering techniques. Moreover, specific endorsements may be required depending on the type of truck being driven and the tasks involved in the competition, such as operating tankers or transporting hazardous materials. This requirement establishes a baseline of competency expected from all competitors, ensuring a standard of safety and skill that is crucial in these events.