Q:Terence O'Brien (New Zealand diplomat) - Terence Christopher O'Brien (born 1936) is a former New Zealand diplomat who led New Zealand in 1993 to a seat on the United Nations Security Council. 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