The most common event associated with the command button is the . . . . . . . . event,

The correct answer is A. click.

A command button is a control that is used to initiate an action. When a user clicks on a command button, the associated event is triggered. The most common event associated with a command button is the click event.

The change event is triggered when the value of a control changes. The double click event is triggered when a user double-clicks on a control. The text event is triggered when the text in a control changes.

Here is an example of how to use the click event in a command button:

Private Sub Command1_Click()
MsgBox "You clicked the command button!"
End Sub

In this example, the message box will be displayed when the user clicks on the command button.