Chapter 5 - Specifying alternate courses of action: Selection statements. After completing this unit, you should be able to: Construct programs that select alternative actions using the If Then Else and Select Case statements; compare the select case statement with the If Then Else statement and describe situations for which each is appropriate; create GUIs using the MsgBox function and three new controls-RadioButton, GroupBox, and CheckBox-that present a set of options to the user and allow the user to input choices.