How do safety-conscious divers prepare for a potential light failure?

Safety-conscious divers prepare for a potential light failure by keeping a secondary light accessible. Night diving and diving in limited visibility require reliable lighting, as visibility can be drastically reduced. Having a backup light ensures that divers can continue to navigate, communicate, and maintain situational awareness even if their primary light source fails.

Using a secondary light serves as a critical safety measure, allowing divers to respond quickly to dark conditions or unanticipated situations without panicking. This practice enhances their overall safety and comfort underwater, making it an essential part of dive preparation in low visibility environments.

Other choices, while they may have some contextual relevance, do not provide the same level of immediate support when addressing the specific risk of light failure.