The BorderStyle property of the labels that display program output is generally set to . . . . . . . .

Fixed3D
FixedSingle
nan
FixedDouble

The correct answer is: None.

The BorderStyle property of a label determines the appearance of the label’s border. The None value specifies that the label has no border.

The Fixed3D and FixedSingle values specify that the label has a 3D or single-line border, respectively. The FixedDouble value specifies that the label has a double-line border.

In general, the BorderStyle property of the labels that display program output is set to None. This is because the labels are typically used to display text, and a border would be unnecessary and distracting.