What is the maximum number of columns that a data validation form in Excel can display?

32

The correct answer is Option 3- 32.

The maximum number of columns that a data validation form in Excel can display is 32. 

The data form is useful, when data are of in a simple form of text boxes that list the column headings as labels is sufficient and don’t required sophisticated or custom form features, such as a list box or spin button. Excel automatically generates a built-in data form. The data form displays all column headers as labels in a single dialog box. Each label has an adjacent blank text box in which we can enter data for each column, up to a maximum of 32 columns. In a data form, we can enter new rows, find rows by navigating or (based on cell contents) update rows and delete rows. If a cell contains a formula, the formula result is displayed in the data form, but we cannot change the formula by using the data form.