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

Then he grabs a rolling bucket with supplies and pulls out a gadget that he uses to start cleaning the window of a house. he

Select from:
i. cleans the windows with the gadget that has power in it and he takes the power off of the cleaner and sits on a bench to wash.;
ii. then goes a few steps further and uses another to dribble onto the glass in front of him.;
iii. then proceeds to clean the dents in the window by pushing the metal down.;
iv. uses a raf to wipe down the window and then he is done.;
The answer is:
iv.