Which feature enables you to make changes to all the slides of your presentation at the same time?
A.
Themes
B.
Slide Master
C.
Animations
D.
Background

  to change the number of rows and columns displayed by the excel object a. select the object and drag a size handle on the active object. b. deselect the object and drag a size handle of the object. c. deselect the object and drag a row or column divider of the object. d. select the object and drag a row or column divider on the active object.