The correct answer is: B. Bound
A bound control is a control that is connected to a data source, such as a table or query. When data from the data source is displayed in a bound control, the control is said to be “bound” to the data source.
An unbound control is a control that is not connected to a data source. When data is displayed in an unbound control, the control is said to be “unbound” to the data source.
An aligned control is a control that is positioned relative to other controls on a form. The alignment of a control can be changed using the Format menu.
A calculated control is a control that displays the result of a calculation. The calculation can be based on data from the data source or on data entered by the user.
I hope this helps! Let me know if you have any other questions.