
In my course that I took, Assaulted Womens and Childrens Counsellor Advocate, we had to get passionate about things. So I use the word passionate a lot. Basically, in my course, passionate meant angry, but still objective (ie: you could be very angry about what happened to a child, but you still had to remain objective). Maybe passionate is the wrong word, maybe the word for your essay should be interest in the subject?
Anyways, I know you will do great!!!!!!! It bites when you totally have to be detached from a subject, that you personally can not have feelings about it. What you gotta do, is use those feelings to learn as much as you can, and use your brain editing to make it into what your teacher wants.
You will do great, I am sure!!!!!