If...Then...ElseIf written as a Select Case Statement

Hello. Select Case Statements confuse me.

The scenario - In MS Word, I have a UserForm with a listing of choices
(AutoText) using OptionButtons. The choice will be inserted at a
bookmark (which I can do outside of the Case statements)

I know it would be much more efficient to write the below as a Select
Case Statement. (There's 44 options.) Can someone get me started?

If UserForm1.OptionButton1.Value = True Then
With ActiveDocument
.AttachedTemplate.AutoTextEntries("atAtlanta").Insert...

If...Then...ElseIf written as a Select Case Statement