1.) A. Transfiguration
2.) D. Party
3.) A. Follow the directions exactly
4.) C. Try to remember
5.) A. Try to confuse him
6.) D. Admit you've lost it to your professor and hope for the best
7.) C. Being able to take on anything
8.) B. Retrace your steps in the hope you'll find it.
9.) C. Ignore the Head and sprint for the Great Hall to check it out
10.) D. Cast a Full-Body Bind Charm
11.) A. Charms