At a business convention, you meet the managers of many organizations. You find that they hold different job titles. Paul is the vice president for human resources at his company and Amanda is the regional vice president for eastern United States at her firm. Derek is the coordinator for sales and he reports to his marketing supervisor as well as to his department supervisor.

Amanda's company follows the approach to departmentalization

a$.$ product

b$.$ customer

c$.$ geographic

d$.$ functional

e$.$ matrix