An Excel Workbook is a collection of ________ A. Workbooks B. Worksheets C. Charts D. Worksheets and Charts

The correct answer is: D. Worksheets and Charts

An Excel workbook is a collection of worksheets and charts. A worksheet is a single page in a workbook, and it can contain data, formulas, and functions. A chart is a visual representation of data, and it can be created from data in a worksheet.

Option A is incorrect because a workbook is a collection of worksheets, not other workbooks.

Option B is incorrect because a workbook is a collection of worksheets, not charts.

Option C is incorrect because a workbook is a collection of worksheets and charts, not just charts.