Final answer:
Emergency Medical Services collects prehospital information for research and improvement of emergency medical care.
Step-by-step explanation:
The agency that collects prehospital information for research is Emergency Medical Services. Emergency Medical Services (EMS) refers to the system that provides emergency medical care outside of a hospital setting, usually in response to 911 calls. EMS agencies collect prehospital data, including information about patients' conditions, treatments, and outcomes, to support research and improve emergency medical care.