In this chapter,

(1) “administrative act” means an action, omission, decision, recommendation, practice, policy, or procedure of an agency, but does not include the preparation or presentation of legislation or the substantive content of a judicial order, decision, or opinion;

(2) “agency” includes a department, office, institution, corporation, authority, organization, commission, committee, council, or board of a municipality or in the executive, legislative, or judicial branches of the state government, and a department, office, institution, corporation, authority, organization, commission, committee, council, or board of a municipality or of the state government independent of the executive, legislative, and judicial branches; it also includes an officer, employee, or member of an “agency” acting or purporting to act in the exercise of official duties, but does not include the governor, the lieutenant governor, a member of the legislature, the victims' advocate, the staff of the office of victims' rights, a justice of the supreme court, a judge of the court of appeals, a superior court judge, a district court judge, a magistrate, a member of a city council or borough assembly, an elected city or borough mayor, or a member of an elected school board;

(3) “record” means a document, paper, memorandum, book, letter, file, drawing, map, plat, photo, photographic file, motion picture, film, microfilm, microphotograph, exhibit, magnetic or paper tape, punched card, or other item developed or received under law or in connection with the transaction of official business, but does not include an attorney's work product, material that is confidential as a privileged communication between an attorney and client under rules adopted by the supreme court, or confidential oil and gas geological and geophysical data.