Final answer:
William O. Douglas, once a hobo, became a Supreme Court Justice.
Step-by-step explanation:
William O. Douglas, once a hobo, became B) A Supreme Court Justice. He was appointed as an Associate Justice of the Supreme Court of the United States in 1939 and served on the Court until 1975.
During his tenure, Douglas was known for his strong defense of civil liberties and his support for environmental conservation.