D) Borders
Borders can be added to outline the data in a table.
Highlight cells A1 - B11 ( all data in our current worksheet should be highlighted)
Click on Format
Click on Cells
Click on Border
Click once in each box by left, right, top and bottom
Click OK
A border has been added to each cell.
In the border dialog box, you may select the weight of the line or choose blank.