To select an entire column in MS-Excel, you need to follow a specific set of instructions. The correct answer to this question is option 'D' - None of the above. Let's explore the correct method to select an entire column in MS-Excel.

Method to Select an Entire Column in MS-Excel:

Unfortunately, none of the options provided in the question are the correct way to select an entire column in MS-Excel. The following steps describe the correct method:

Step 1: Open the Excel worksheet where you want to select the entire column.

Step 2: Move your cursor to the top of the column you want to select. The column letters are displayed at the top of the worksheet.

Step 3: Click on the letter of the column you want to select. For example, if you want to select column A, click on the letter 'A'. This will highlight the entire column.

Step 4: To select multiple columns, you can hold down the 'Ctrl' key on your keyboard while clicking on the letters of the columns you want to select. For example, to select columns A, B, and C, you would click on the letters 'A', 'B', and 'C' while holding down the 'Ctrl' key.

Step 5: Once the entire column(s) is selected, you can perform various operations on it, such as formatting, entering data, or applying formulas.

Conclusion:

In order to select an entire column in MS-Excel, you need to click on the letter of the column you want to select. Using the 'Ctrl' key allows you to select multiple columns simultaneously. Remember that option 'D' - None of the above is the correct answer in this case.