Ron is preparing for a two-day presentation to a large audience at a seminar that he conducts every year. he should: a. spend a lot of time rehearsing the presentation he gave last year that was an enormous success b. ask himself what to do if his audience is predominantly women, or what to do if they are mostly from a different cultural background than himself c. send out a questionnaire to everyone who signed up asking about their age, gender, cultural and ethnic background, education, occupations, etc. d. both b. and c. above.