In the Analyze Ribbon Tab in the Filters Ribbon Group you clicked the Insert Timeline button. Inside the Insert Timelines dialog, you checked the Date check box, you clicked the OK button. You clicked the April segment. Explanation: A timeline is a way to visualize data over a period of time. In this case, the timeline would be used to filter the data in the PivotTable by values in the Date field. This would allow the user to only see data for dates in April.