I'm guessing you have some sort of personal agenda with this question, but I'll answer it anyway.
In public meetings (for example Shareholder's Meetings), shareholders are allowed to ask anything they choose.
On the other hand, don't expect anything other than generalizations as an answer to a question like "what is your job description, and why are you the most qualified?"
If you are an employee of this company, asking this sort of question is what I call "a career-limiting move". I wouldn't advise it.