I would highly suggest interviewing M Krass. She's on of the most professional CAD users I've ever had the privilege to interact with, and is also a really nice person. However, she mainly uses Solidworks. Might it work to do your presentation on CAD, instead of just limiting it to Inventor?

Anywhoo. I wouldn't call myself a professional, as I don't do this as a profession (yet!), but Hope I can help:

1. What makes you a professional?(how long you have used it, awards, jobs, etc...)
The speed at which I find myself able to CAD useable parts.

2. What is the greatest advantage Inventor has over other drafting softwares?
Personally, This could be an entire paper. Try not to focus too much on this. It's like the Windows v Mac debate: it all comes down to the individual and their preferences, as well as integration with the work environment.

3. How would you describe the thought process used with Inventor?
Very creative, much like art. Inventor is just a very special set of pens and papers. It still needs an artist, a user to control it. You won't get too far if you can't "see" the parts before working through them.

4. What is your favorite tool and why?
The save key. Using that means I've finished something worthwhile, and shows a job well done.

5. How do you teach this software to someone new?
Look for the thread: Teaching Inventor to Newbies. I wrote my whole routine on there.

6. What companies do you know that use this software? (if any)
I'm not sure, as I have yet to enter the workforce. However, I know that Solidworks is more widely used (currently).

7. Please list the tools that you would show in a 5-7 minute demonstration?(for them to understand, not to be able to use)
Sketch basics, extrude, assemble, and render. That shows the huge potential of the software, from the ground up.

8. Is there anything else you can think of that is of importance?
Yep. Try as many variations of CAD as you can get your hands on before settling down into one. It makes for a more well rounded experience, and allows you to enjoy the process more.

Good luck, hope I've helped!