David M. Key - David McKendree Key (January 27 1824 February 3 1900) was a Democratic U.S. Senator from Tennessee from 1875 to 1877 as well as the U.S. Postmaster General under President Hayes and a United States federal judge. 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