Why is it crucial for cyclists to wear helmets?

Answer: C — To protect against head injuries

Wearing helmets is crucial for cyclists primarily because they provide essential protection against head injuries. In the event of a fall or collision, a properly fitted helmet can significantly reduce the risk of serious brain injuries, concussions, and other trauma to the head. The design of helmets helps absorb impact forces, cushioning the skull and protecting the brain from direct contact with hard surfaces. Given that many cycling incidents can lead to unfortunate accidents, wearing a helmet serves as an important safety measure that can save lives and improve outcomes in the event of a crash. While factors like style or compliance with traffic laws may influence a cyclist's decision to wear a helmet, the most critical reason remains the protective benefits it offers, safeguarding the cyclist's well-being during their rides. Performance enhancement is not a primary function of helmets, reinforcing that their fundamental role is centered around safety rather than aesthetics or legal requirements.