To be successful, you need to have a good mindset about your goals. Make sure you never give up and work the hardest you can. Even if it means having hours and hours of labor and minimum hours of rest. Everyone wants to be successful, but not everyone wants to work for it.
C is considered to be a sentence fragment because it looks like a sentence but it isn't.
I'm pretty sure it's an adjective phrase because it's describing where it is clean.<span />