Which of the following provides the most protection in a crash?

A full helmet offers the most protection in a crash because it provides comprehensive coverage for the entire head, including critical areas such as the top, sides, and back. This design is specifically engineered to absorb impact, reducing the risk of severe head injuries. Full helmets also typically incorporate a face shield, which protects the face and eyes from debris, wind, and potential impacts, further enhancing rider safety.

In contrast, other types of helmets, such as partial helmets, half helmets, or those that do not cover the full head, do not provide the same level of coverage and protection. These options leave parts of the head vulnerable, such as the face and the back of the skull, which in the event of a crash could lead to more severe injuries. In summary, the full helmet's design is crucial for maximizing safety while riding, which is why it is considered the best option for crash protection.