Kumar Wants to Do Research Using a Survey About Attitudes

Kumar wants to do research using a survey about attitudes toward smoking.Kumar wants his sampling of respondents to be as representative as possible of the adult Ohio population.Kumar should ____.

A) randomly pick names from the latest Ohio census
B) take every thousandth name from phone books all over the state
C) survey all passersby in downtown areas of communities all over the state
D) put ads on TV stations around the state asking for volunteers