Which of the following is the best example of a power-based approach used by an employee?

a. Jamal files a grievance for a disciplinary action he feels is unfair.

b. Yvonne files a discrimination claim with the local civil rights agency.

c. Yvette keeps asking to speak with her boss about a problem, but he never seems to have the time.

d. Andrew tells his boss he will talk with his attorney if she continues to evaluate his performance negatively.