A large retail organization previously divided work among its four employee benefits staff into distinct specializations. One persol answered all questions about superannuation $($pension plans$),$ another answered all questions about various forms of paid time $0($e$.$g$.$ vacations$),$ and so on$.$ These jobs were recently restructured so that each employee benefits person answers all questions people in a particular geographic area. For example, one staff member is responsible for all employee benefits inquiries from anyone in a particular geographic region. This job restructuring is an example of:

Select one:

a$.$ self$-$leadership

b$.$ job enrichment

c$.$ job rotation

d$.$ scientific management