One Way Businesses Can Make Sure They Are Hiring Individuals

One way businesses can make sure they are hiring individuals with strong personal ethics is by

A) employing only those people who have a very high intelligence quotient.
B) administering simple tests that indicate analytical skills of a prospective employee.
C) asking for letters of reference from the prospective employees.
D) hiring only those people who are relatives of current employees.
E) spying on prospective employees.