In the Database Tools Ribbon Tab in the Analyze Ribbon Group, you clicked the Analyze Performance button. You clicked the All Object Types tab. Inside the Performance Analyzer dialog, you clicked the Select All button, clicked the OK button. Inside the Performance Analyzer dialog from the Queries list, you selected Table 'TuitionRates': Add an index to field(s) 'Department'. Inside the Performance Analyzer dialog, you clicked the Optimize button, clicked the Close button.