The office manager reviews the staff periodically to determine if any unauthorized information was accessed. a. authorization checks b. audit trail c. user name verification d. audit check

The correct option is B. 
Audit trail refers to a security record which provide documentary evidence of the activities that affect specific operations in the office environment. Basically, the audit trail report shows the people who had accessed a computer system, the time the computer was accessed and the operations that were performed. Audit trail keeps records of how people in an organisation are using a shared computer system.

Blood transfusions were rarely done and often fatal; they were outlawed until the nineteenth century.

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