The correct answer is C. Code Editor Window.
The Code Editor Window is where you enter the event procedure’s code. It is a window that displays the code for the current form or control. You can use the Code Editor Window to add, edit, and delete code.
The Event window is a window that displays a list of events that can be handled by the current form or control. You can use the Event window to select an event and then open the Code Editor Window to write the code for the event handler.
The Properties window is a window that displays the properties of the current form or control. You can use the Properties window to change the properties of the form or control.
The Action window is a window that displays a list of actions that can be performed on the current form or control. You can use the Action window to select an action and then perform the action.