Answer:
Purchasing agent
Step-by-step explanation:
Bob though has not well researched about specifications they need in the computer but has acted as an purchasing agent. The boss of the company researched about the required specification and has delegated the task to order the computers from his selected vendor. So here we can see he has not played any vital role for choosing the computer on the specification grounds that better suits the company needs which is the job of procurement manager. The duty was purely related to the purchasing agent.