What happens next in this paragraph?

How to restore a macbook pro
Back up any files you want saved to an external hard drive or online cloud storage system.
Restoring your macbook pro will wipe and erase all the data from your computer's hard drive.
Power off your macbook and connect it to a power source.
Pick your answer from:
[I] Connect one end of the macbook pro to the power socket on your power cord and the other end to your pc. You'll find the power plug-in switch next to your pc.;
[II] This will prevent your computer from shutting down and interfering with the restoration process. Power on your macbook pro and wait for the apple startup sound.;
[III] Do this by removing any built-in peripherals. Locate and unplug the computer from the power source.;
[IV] To close off macbook's hardware for later on, connect its system to electrical outlet. Shut down all programs in your macbook pro.;
[II]