This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to speed up youtube videos
Go to youtube.com.
You may be asked to sign into your google account if you haven't already.
Find a video you'd like to play.

I. The program will open in youtube and attach image files to each clip. It'll help your videos roll by faster.;
II. Type the title of the video where you want it to appear in the video description column and click the " play " button below it to download and insert a video. Choose the volume that you want to play the video on.;
III. You can also follow a link to a video from another site. Look for the settings icon along the bottom right edge of the video.;
IV. Videos are found all over the internet. Choose one you like--simple, classic, perfect, and unique.;
The answer is:
III.