​Karin’s manager is upset because even though Karin​ isn’t a…

​Karin’s manager is upset because even though Karin​ isn’t a top​ performer, she is being forced to put Karin into the shift leader position that just became available because Karin has been with the company longer than any other employee in the department.​ Karin’s company uses the​ _______ method of promotion.