A control’s border is determined by . . . . . . . . property.

The correct answer is: C. BorderStyle

The BorderStyle property of a control determines the style of the control’s border. The possible values for the BorderStyle property are:

• None – No border is drawn.
• Fixed3D – A three-dimensional border is drawn.
• FixedSingle – A single-line border is drawn.
• FixedDouble – A double-line border is drawn.
• Sizable – A border is drawn that allows the control to be resized.
• ToolWindow – A border is drawn that is similar to the border of a tool window.
• FixedToolWindow – A border is drawn that is similar to the border of a tool window, but the control cannot be resized.

The BorderStyle property is inherited by child controls. If the BorderStyle property of a parent control is set