Which of the following actions is a responsibility of a first-aid provider when on scene?

Relaying all relevant medical information to EMS providers is a crucial responsibility of a first-aid provider when on scene. This action ensures that the emergency medical services have the necessary background on the patient's condition, which can influence the decisions made in further care. The first-aid provider typically gathers information about the patient's medical history, any medications they are taking, allergies, the nature of the incident, and the patient's vital signs. This information is vital for EMS to provide effective and timely treatment.

In contrast, encouraging spectators to intervene can lead to confusion and potential harm, as bystanders may not have the necessary training or knowledge. Providing advanced medical interventions falls outside the scope of a first-aid provider’s responsibilities, as such actions require specific training and licensure that first-aid providers do not possess. Additionally, deciding the outcome of the patient’s care is far beyond the role of a first-aid provider, who must focus on stabilization and transferring care to qualified medical professionals, rather than making determinations about long-term care plans.