What is the best way to create another copy of a slide on Powerpoint?

Ctr + C on the target slide then CTRL+V on the next one :)

Just press Ctrl + C and the press Ctrl + V

You need to press Ctr + C on the target slide and  then CTRL+ V on the next one

Click the slide(s) , then press Ctrl + c

Then, click to select the slide where to paste to ..and press Ctrl + v. ( this will paste next  to selected slide)

Just copy the previous slid to new slid .

Creat New slides ,, Copy and past

Copy and paste

Ctrl+c and then ctrl+v

right click on the slide ( in slide & outline pane ) then choose Duplicate slide

control c on the slide that you want to copy and the control v. If Mac computer you hit command C instaed of control