The size of a video on the powerpoint slide can be changed by adjusting

a-the corner key and shift key.

b-changing the video style.

c-adjusting the design.

d-the shift key and playback key.

The video size of a power point video in a slide can be changed by  pressing d-the Shift key and Playback key.

Explanation:

To understand this question we need to analyze all of the options first of all a: is going to make two things first navigate and then group the slides in a group. The second option is going to change the visual presentation o the video by assigning I a different filter. The third option is going to help you keep modifying the shape of the video and the different keys of color, the brightness of the video. However, the one that is effective for the size is the D) option. Because it will help you modify the video size.  

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