Answer the following question: Reuven Gal (Hebrew: ראובן גל‎; born August 24 1942 surname Gruber) is an Israeli social and clinical psychologist a social activist and entrepreneur researcher author and consultant in the field of behavioral communal and social sciences. Working closely with the Office of the Prime Minister of Israel Dr. 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?
Answer:
Office Holder