Bethany A. Hall-Long (born in Sussex County Delaware) is an American politician and a Democratic member of the Delaware Senate since January 13 2009 representing District 10. Hall-Long has served in the Delaware General Assembly continuously since 2003 in the Delaware House of Representatives until 2009. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Office Holder