If you want an online presentation, I think you mean by a website.
Best thing you can find is Google Slides.
if you want a program,
LibreOffice is your best bet. It is completely free and it is for Linux, Windows and possibly Mac.
Answer:
A legal document that an app or a website must provide to describe the rules the company and users must obey when they use the app.
honestly i think ur answer would be D because it keeps you from flying out of the window