'A Person who rules without consulting the opinion of others' is Option C, Autocrat. Option A, 'Democrat' is a person who believes in democracy. Option B, 'Bureaucrat' is an official working in bureaucracy which is a system for controlling a country or an organization that is operated by a large number of officials. Option D, 'Fanatic' is a person who in extremely interested in something, which may also seem unreasonable to others. Thus, options A, B and D are incorrect options and the correct word for the given phrase is Option C, Autocrat.