Suppose That You Are to Give a Presentation for One

Suppose that you are to give a presentation for one of your classes. As you drive to school you practise your presentation in your head. You arrive and your friend asks you about the traffic on your way. You find that you do not really remember the drive at all, despite arriving safely.
-What process allowed you to practise your presentation?

A) implicit memory
B) explicit memory
C) explicit base
D) implicit base