Which is an important issue the united states faces in the twenty-first century? a. terrorism b. global warming c. globalization d. all of the above

D all of the above
although Global Warming will take millions of years to affect the globe permanently and globalization is also not a problem because all 7+ billion people in the world could fit in the US city of Los Angeles. 

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.