If you select the $2$ x $2$ block of cells D$3$:E$4$ and then go to Format $>$ Hide and Unhide on the Home tab, what determines whether columns D and E$?$

If you select the $2$ x $2$ block of cells D$3$:E$4$ and then go to Format $>$ Hide and Unhide on the Home tab, what would you select to hide rows $3$ and $4?$

If you want to insert a new column after column C in your spreadsheet, which cell or cells should you select as active before choosing Insert $>$ Insert Sheet Columns on the Home tab?