Answer: a. Vendor invoices should be approved by a departmental supervisor other than the employee ordering the goods.
Step-by-step explanation:
From the question, we are informed that a university does not have a centralized receiving function for departmental purchases of books, supplies, and equipment.
The control that will most effectively prevent payment for goods not received, if performed prior to invoice payment is that the invoices of the vendor should be approved by a departmental supervisor other than the employee ordering the goods.