To delete . . . . . . . . you must delete the contents of the form’s text property.

The correct answer is C. Text in text box.

A text box is a control that allows users to enter text. The text property of a text box contains the text that is currently displayed in the text box. To delete the text in a text box, you must delete the contents of the text property.

The title bar is the bar at the top of a window that contains the name of the window. The properties window is a window that displays the properties of an object. The text in level is the text that is displayed in the level control. The level control is a control that allows users to select a level from a list of levels.

Here are some additional details about each option:

• Option A: Title bar. The title bar is the bar at the top of a window that contains the name of the window. The title bar is not a text box, so you cannot delete the text in the title bar by deleting the contents of the text property.
• Option B: Properties window. The properties window is a window that displays the properties of an object. The properties window is not a text box, so you cannot delete the text in the properties window by deleting the contents of the text property.
• Option C: Text in text box. The text box is a control that allows users to enter text. The text property of a text box contains the text that is currently displayed in the text box. To delete the text in a text box, you must delete the contents of the text property.
• Option D: Text in level. The text in level is the text that is displayed in the level control. The level control is a control that allows users to select a level from a list of levels. The text in level is not a text box, so you cannot delete the text in the level control by deleting the contents of the text property.