Fred Received an Offer of Employment from Major Walker, His

Fred received an offer of employment from Major Walker, his potential supervisor at the Department of Defense, contingent upon Fred's successful passing of a ________. When he called Major Walker to ask about this requirement, Major Walker said, "Fred, it is a frequently used as part of the employee selection process. Many federal agencies and private U.S. employers use it."

A) drug test
B) background check
C) reference check
D) personality test
E) integrity test