What type of equipment is critical for safe riding?

The correct choice emphasizes the importance of both a helmet and proper stirrups for safe riding. A helmet is essential as it provides crucial head protection in case of falls or accidents, greatly reducing the risk of serious injury. Proper stirrups are equally important, as they allow for better control and stability while riding. They help the rider maintain their balance and proper position in the saddle, which is key to effective communication with the horse and ensuring a safe riding experience.

Selecting casual footwear may not provide the necessary support or protection needed while riding, and a saddle without a girth would be unsafe, as it would not secure the saddle on the horse properly. A light bridle, while useful, does not carry the same level of safety importance as a helmet and proper stirrups, which directly contribute to rider safety.