Hmm I threw in the changes you mentioned and it's still giving me:
581. Which of the following knives is used to turn vegetables?
Your answer was: Bird\'s beak knife
That is incorrect.
The correct answer is: Bird's beak knife
I thought I had magic quotes turned off as well (it's a setting with my host). What did you use to format it so nicely, is there something you use to indent your code?