Answer to Question 1
C
Stieglitz believed that for photography to be an art, it must be true to its own nature and not try to be painterly. Lange's work was photojournalism, intended to document and inform, and her photographs created a visual journal of the effects of the Great Depression.
Answer to Question 2
C
Warhol's films resemble his paintings of the time, which challenge our idea that something will happen. Empire, Warhol said, was a way of watching time pass.