What happens next in this paragraph?

How to install ubuntu linux without cd (windows ) 
Check your available space. 
You'll need at least 7 gb of free space on your computer to install ubuntu, but you'll want more if you intend to install programs or download lots of files. You'll be able to install ubuntu alongside windows or replace windows entirely.
Choose your answer from: I. Go to the " windows " shortcut. Select " windows os " from the list that appears. II. If you're planning on replacing your windows installation, make sure that all of your important files are backed up. Ubuntu will erase the drive containing windows if you choose to replace it. III. The top minimum : 250 gb of space for on-board of your computer. The format of computer : 32 gb nx-32 with use of windows. IV. Any free space you can get on your usb drive. Any free space available to you offline will be taken away.
II.