Which of the following keyboard shortcuts should be pressed to hide the columns which are selected in a worksheet? Control 9 Control 7 Control 8 Control o

The correct answer is Control 9.<br /><br />In Microsoft Excel, pressing the Control (Ctrl) key in combination with the number 9 (Ctrl+9) will hide the selected columns in the worksheet. This keyboard shortcut provides a quick way to hide columns without having to navigate through the menu options.<br /><br />The other options provided are not correct for hiding selected columns in Excel:<br /><br />- Control 7 is used to hide selected rows.<br />- Control 8 is used to unhide selected columns or rows.<br />- Control 0 is used to hide selected columns.<br /><br />So, the keyboard shortcut that should be pressed to hide the columns which are selected in a worksheet is Control 9.