When you need to pass a motorcycle, . move into the left lane to pass the motorcycle b. pass to the left using the same lane c. use your horn so the motorcyclist will move to the shoulder

A) move into the left lane to pass the motorcycle

Explanation:

According to law, when it is needed to pass other vehicles, it requires you to only pass other vehicles on the left (using the left lane).  

When passing a motorcyclist, remember to give him/her the same full lane width as other vehicles. Never drive in the same lane with a motorcyclist, even if the lane is wide enough to fit your vehicle and the motorcyclist.

attach the statements so i can answer : )