Answer - A - Alfred Stieglitz promoted photography as a legitimate art form that was equal to painting when he hung photographs in a contemporary art gallery.
Key Takeaway: Alfred Stieglitz, who was married to painter Georgia O'Keefe, was an American art promoter and photographer who strived to make photography an accepted art form. Stieglitz ran several art galleries in New York in the early part of the 20th century, where he hung photographs and introduced several important avant-garde European artists to the United States.