Which accessory is permissible for wrestlers to wear during a match?

Headgear is permissible for wrestlers to wear during a match because it provides essential protection for the ears and head, helping to prevent injuries such as cauliflower ear, which can result from repeated trauma to the ear during rigorous wrestling activities. The design of wrestling headgear is specifically intended to be secure and unobtrusive, allowing for full mobility without compromising safety.

While other accessories such as jewelry are generally prohibited due to concerns over safety and the potential for injury to both the wearer and opponent, socks may also be limited depending on the specific rules for a particular competition. Caps are typically not part of wrestling gear and therefore do not meet the regulations associated with permissible wrestling equipment. Thus, headgear stands out as the only correct choice in this context, emphasizing the importance of safety in the sport.