Text box’s ReadOnly Property is set to . . . . . . . . by default.

The correct answer is False.

A textbox’s ReadOnly property is set to False by default. This means that the user can type text into the textbox.

If you want to prevent the user from typing text into the textbox, you can set the ReadOnly property to True.

Here is an example of how to set the ReadOnly property to True:

textbox1.ReadOnly = True;

This will prevent the user from typing text into the textbox.