MS Power Point
What is the best way to create another copy of a slide?

None of the listed here
From Insert Menu choose Duplicate Slide
Redo everything on a new slide that you had done on previous slide
Click the slide then press Ctrl+A and paste in new slide

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MS Power Point
What is the use of 'Hide Slide' option?

to hide the selected slides during Printing
to hide the selected slides during Deleting
to hide the selected slides during Editing
to hide the selected slides during Presentation

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