In what way can the buddy system enhance diving safety?

The buddy system enhances diving safety primarily by ensuring that divers can assist each other in emergencies. When divers pair up, they maintain close proximity, allowing them to monitor each other's well-being and quickly provide assistance if one diver encounters difficulties. For instance, in case of an equipment malfunction, a buddy can share air, help perform a controlled ascent, or provide physical support. This teamwork fosters a greater sense of security and mitigates risks, as each diver has someone to rely on in unexpected situations.

The other options, while related to diving, do not directly support the primary purpose of the buddy system. Increasing the number of divers in the water does not guarantee safety, as it could lead to confusion or difficulty in monitoring everyone. Splitting air supplies is not a standard practice; divers typically have independent air supplies for safety reasons. Lastly, permitting solitary dives contradicts the core principle of the buddy system, which is to ensure that divers have a partner for support and safety.