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

A close up is shown of a very dirty floor being cleaned with a large vacuum. Words on the screen explain the strength of the vacuum as the person continues. the floor

Choose your answer from:
(I) is then scraped and the vacuum begins to wipe down the floor.;
(II) is being cleaned at walking speed.;
(III) is shown shining over and over again in a drain.;
(IV) is seen turned upside down while the individual vacuums the floor with the small white device.;
The answer is:
(II)