Keena's Company Was Expanding

Keena's company was expanding. After a period of downsizing, the company had decided to increase organizational profitability by gaining market share, which meant a need for more people. As assistant manager of human resources, she was in the process of evaluating what would be the most effective means of gaining new employees who were qualified, were cost efficient, and could help maintain the company's commitment to a diversified workforce.
-To reach the largest possible audience, Keena should consider ________ as a source of potential candidates.

A) advertisements
B) employee referrals
C) school placement
D) private employment agencies