How does wearing a helmet benefit a motorcyclist?

Answer: C — It protects against serious head injuries

Wearing a helmet provides critical protection for motorcyclists by significantly reducing the risk of serious head injuries in the event of an accident. Helmets are designed with materials that absorb impact energy, which helps to cushion the head and reduce the force of impact during a collision. This protective feature is essential, as head injuries can lead to severe consequences, including long-term disabilities or even fatalities. Helmets also shield the skull and brain from sharp objects or surfaces that could cause harm during a crash. In contrast, while balance, hearing, and visibility are important aspects of riding safety, they are not the primary reasons for wearing a helmet. Helmets do not improve balance or enhance hearing; in fact, they may slightly diminish sound perception due to covering the ears. Furthermore, visibility is primarily influenced by the design of the helmet and the motorcyclist's position rather than being a direct benefit of helmet use. The main focus of wearing a helmet is to ensure the motorcyclist's head is protected in case of an accident, which directly supports overall safety on the road.