Multi-select problem: How does the next paragraph end?

A person is putting something on a chain of a bike. They use a blue tool to take the chain apart. they

Available choices:
(1). continue piecing together the chains to make a bike.;
(2). put it back together using a tool.;
(3). plug all of the holes in the chain and wipe off any excess parts.;
(4). tape down the piece where the chain is attached.;
(2).