ProLog is a firm that specializes in warehousing and fulfilling orders for firms as diverse as those supplying parts for manufacturers of complicated missile defense systems to those manufacturing pet-care products. Firms contract ProLog to manage part or all of their order fulfillment process. ProLog is an example of a:
a. merchant wholesaler
b. retailer
c. distributor
d. third-party logistics firm (3PL)
e. manufacturing flow process manager
ANSWER: d