The correct answer is: D. All of the above
The formula bar is a bar located above the cell grid in a spreadsheet program. It displays the formula or function that is currently entered into the active cell. The formula bar can be used to edit the formula or function, or to enter a new formula or function.
The edit formula button is a button located to the left of the formula bar. It is used to edit the formula or function that is currently entered into the active cell.
The cancel button is a button located to the right of the formula bar. It is used to cancel the entry of a formula or function.
The enter button is a button located to the right of the cancel button. It is used to enter the formula or function that is currently entered into the active cell.
Here is a screenshot of the formula bar in Google Sheets:
The formula bar is highlighted in blue. The edit formula button, the cancel button, and the enter button are all visible.