What interview question would best allow you to demonstrate your qualifications for this position?

Taking into account your previous experience and training, what aspects of that would be relative to the successful fulfillment of this position? In other words, this would give the interviewee a chance to explain just how his previous experience and training has prepared him for this position ie say graduating with a degree in geology and having say 15 yrs working in a mine as a supervisor of say drilling that could prepare him/her for being a chief geologist.