You are presented with the quiz "What carries urine from the bottom of the bladder to a sphincter? " 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "urine leaves the body through a sphincter in the process of urination" and "during urination, the urethra carries urine from the bottom of the bladder out of the body". 

So, what's the best answer to the question?


 

       Urethra    