Answer:
D. It would be impossible for employer prejudice to exist in a firm that sells its output in a competitive market unless all rivals also discriminate.
Explanation:
In a competitive market , efficiency of employee is the only factor that is taken into account to meet the challenges of the market . The employer can not afford the cost of being prejudiced against a staff because it only has deleterious effect on the morale of the employee. So in a competitive market ,there is no scope for employer's prejudice.