A Nurse in a Hospital Told the Chief Dentist, Dr

A nurse in a hospital told the chief dentist, Dr. Albrecht, that the hospital should purchase equipment that would sterilize the dentists' tools without using any water because water tends to affect the durability of the tools over time. Dr. Albrecht located some articles on chemical sterilizers and gathered more information on how they worked. After talking to salespeople, Dr. Albrecht finally placed his order for the machine. In this instance, Dr. Albrecht played the role of a(n) ________.

A) monitor
B) decider
C) agent
D) influencer
E) gatekeeper