As an HR Manager at Stevenson and Lee Marketing, Inc., Bobby just learned that their current Plant Manager plans to retire by the end of the year. Hoping to fill the position internally, Bobby identifies six key employees that he feels could be successful in the role, and partners with a nearby consulting firm to conduct an assessment center. In their first activity, labeled a(n) __________, employees were presented with a complex, job-specific problem, with no further instructions or direction, and asked to solve it together within an hour. interview in-basket role play leaderless group discussion