Answer:
I'm years late, but the answer is A.) Slide Layout...
Explanation:
-Slide layout changes the layout and make-up of the slide(s)
-It's not B. because Shapes is just to insert shapes onto the slide(s)
-It's not C. because Animation is to modify the shapes and add animation to them.
-It's not D. because Slide Transition is to modify the way the presentation goes from slide to slide when being presented.
