What is a primary source? asap!

a. a document made by someone who actually saw an event

b. a photograph taken by a professional photographer

c. a document created by someone who heard about an event

d. a newspaper article about an actual person or event

where is the image at? ?

photography had emerged as an elite art pursued by a few creative individuals for a few wealthy patrons. but now, said bauldelaire, it was succumbing to "the great industrial madness of our times." it was becoming a mass production industry that catered to middle-class tastes, including a taste for gadgetry. the stereoscope, the first 3d imaging system, had turned looking at photographs into parlor entertainment. a "thousand hungry eyes were bending over the peepholes of the stereoscope as though they were the attic-windows of the infinite.