Q:David Halvorson -  David Philip Halvorson (July 9 1948 – July 1 2013) was an American politician.Born in Sidney Montana Halvorson graduated from Williston High School in Williston North Dakota. Halvorson received his bachelors degree in accounting from the University of North Dakota and was in ROTC. He went to the United States Military Academy for two years for military training and studies. He then returned to Montana and was in the radio business. He was also a wheat farmer. 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?
A:
Office Holder