Answer:
a. Initiator
Explanation:
The administrative head of a company proposes to replace and revolutionize the office furniture for the employees. Administrator plays the role of initiator in this scenario. As there are five persons involved in one single buying decision: Initiator - Influencer - Decider - Buyer - User, in this case as administrator is proposing and initiating the purchase of office furniture, therefore, he has played the role of initiator in this scenario.
