Final answer:
b. Alfred Stieglitz was deeply influenced by his wife's Scottish Presbyterianism and played a significant role in promoting photography as an art form.
Step-by-step explanation:
b. Alfred Stieglitz was deeply influenced by his wife's Scottish Presbyterianism.
He was an American photographer who played a significant role in promoting photography as an art form. Stieglitz opened galleries and published magazines to showcase the work of contemporary photographers, including his own. His wife, Georgia O'Keeffe, also influenced his work and they collaborated on several projects together.