The demand for automobiles in the 1920s
a. stimulated growth in many other industries
b. led to a nationwide recession
c. closed down the steel industry
d. brought about the collapse of the suburbs

I believe the demand for automobiles in the 1920s stimulated growth in many other industries.  Think of the other things that came after automobiles. ;)

the correct answer is d: "party organizers, volunteers, voters, and elected officials."

party organizers: individuals responsible for designing strategies in order to better execute the political campaign. this includes the candidate's public relations. volunteers: individuals responsible for raising awareness regarding the candidates running for office.voters: individuals who are convinced by volunteers that a particular candidate is the best option.elected officials: winning candidate and his elected team are a product of a successful political campaign.