​The ways to address agency costs include all EXCEPT

A) ​running background checks on prospective employees
B) hiring only from job fairs
C) spot checks of the quality of employee work
D) ​replacing closed offices with cubical office spaces

Job fairs may not always be the best source of qualified and competent employees, and therefore hiring only from job fairs may not necessarily address agency costs. A, C, and D can all be effective ways to address agency costs by ensuring that employees are reliable, competent, and efficient in carrying out their duties. Running background checks helps to ensure that employees have a positive track record and no history of fraudulent or dishonest conduct, while spot checks help to identify any quality or performance issues that may arise. Replacing closed offices with cubicle office spaces can promote transparency, communication, and accountability, as well as reduce opportunities for employees to engage in unethical or unproductive behavior.