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

How to fix a tangled bike chain 
Slide the chain onto the smallest sprockets. 
Sprockets are the metal plates with teeth that move the chain. Since you won't be able to ride the bike, you'll have to move the sprockets manually.

Choose your answer from: (I). If you're able to slide the chain onto the smallest sprockets, you can either either slide or move the sprockets manually onto the smallest chain. If you're inexperienced, use sprockets that are thicker than your chain.. (II). To do this, simply lift the chain and move it to the smallest sprocket. Do this on both the rear and front chain sets.. (III). To replace the sprockets and snap the sprockets, slide the chain onto the slightest sprockets. A chain of sprockets is an attachment to the parts of the sprockets that the bike has caught.. (IV). To start, slide the sprockets onto the larger sprockets. When you place them on, they have to be closer to you; if you move the sprockets near the sprockets it will become jarring..
The answer is:
(II).