In the Data Ribbon Tab in the Forecast Ribbon Group, you clicked the Forecast Sheet button. Inside the create Forecast Worksheet dialog, you clicked the Create button. Explanation: A forecast sheet is a document that contains a line chart and forecast values for a given time period. In this case, the selected data is for the years 2016-2018, and the forecast values are for the year 2018. The line chart shows the trend of the data over time, and the forecast values provide an estimate of what the data will be for the year 2018.