What was the name of the six note pattern aid invented by guido?

Guido of Arrezo is a Benedectine monk from Italy and an Italian music theorist of the Medieval Era.  While at Arrezo he develops new techniques and method in teaching music such as staff notation and the use of six note pattern aid "ut–re–mi–fa–so–la" which also means do–re–mi–fa–so–la).

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.

Where’s the diagrams?