mary, an hr recruiter for aurora borealis lighting inc., decides to hire an individual who has the ability to learn on the job. the company estimates that it will be two years before the new hire will be fully productive. consequently, it is looking to hire a person who will be with the company for at least four years. mary suggests that the company hire only those applicants who have been with their previous employers for at least two years and have not changed jobs too frequently. mary's suggestion best exemplifies a(n) .