When an option box is selected, its value is set to “True” and when it is unselected; its value is set to “False”.

The correct answer is TRUE.

When an option box is selected, its value is set to “True”. This is because the option box is a Boolean control, which means that it can only have two values: true or false. When the option box is selected, it means that the value is true. When the option box is unselected, it means that the value is false.

Here is a brief explanation of each option:

• TRUE. When an option box is selected, its value is set to “True”.
• FALSE. When an option box is unselected, its value is set to “False”.