Please answer the following question: Donald Cameron (Alberta politician) - Donald Cameron Jr. (March 6 1901 February 13 1989) was a Canadian academic author teacher and politician. He served as a member of the Canadian Senate sitting as an Independent Liberal from 1955 to 1987. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
Answer:
Office Holder