Which of the following statements is correct regarding the oxygen delivery system?

The statement indicating that the oxygen delivery system should only be used by trained professionals is correct because administering oxygen in a diving context requires specific knowledge and skills. Training ensures that individuals understand how to properly set up the oxygen equipment, deliver the correct concentration of oxygen, and respond to potential complications such as oxygen toxicity or other medical issues that could arise in diving-related emergencies.

Using oxygen in any non-medical situation can pose risks if not properly managed, particularly in a high-pressure environment like diving. Understanding the physiology of how oxygen affects the body, especially under varying pressures, is critical for effectively treating dive-related illnesses such as decompression sickness. Proper training reinforces safety protocols and the ability to act responsibly in emergency situations, which is crucial when dealing with potentially life-threatening conditions.

The importance of restriction to trained professionals in the context of oxygen delivery emphasizes the need for competence and caution in its administration to ensure the safety and well-being of individuals affected by diving incidents.