Which of the Following Is Least Likely to Be Considered

Which of the following is least likely to be considered a manager?

A) a lieutenant leading an infantry platoon
B) an IT technician who enables communication between all of a company's employees
C) a doctor who acts as head of the physiotherapy department at a public hospital
D) an administrator in charge of fund-raising activities in a non-profit organization
E) the mayor of a large city