Which is the most efficient way to make the text in a row bold in every worksheet in the file?

a) select the row in which you want to make the text bold and click the bold icon in the toolbar. next right-click select all.

b) select the row in which you want to make the text bold icon in the toolbar.
repeat this process in each worksheet.

c) while pressing the ctrl key, select each worksheet tab individually. next, select the row in which you want to make the text bold and click the bold icon in the toolbar.

d) right-click on the worksheet tab bar and click select all. next, select the row in which you want to make the next bold and click the bold icon in the toolbar.