The three important reasons for studying history are
1) to connect the dots to form a picture
2) to reveal past contributions of civilizations
3) to connect the past to the present
4) to memorize important dates, events, and people
5) to recognize patterns

People study history for very varied reasons but among them the most important reasons for me are to reveal past contributions of civilazation so that we can connect the past to the present. It is also important to take notes of different scenarios so that we can create the greater pictures. So, I picked the first three choices. 

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.

Athe rate increases as income increases