The theme of patronage refers to: a. the use of metaphors
b. the cycle of life and death
c. a political message
d. the commission of a work of art

d. the commission of a work of art

Explanation:

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answer; i believe the correct answer is ( blues) ; my favorite: )

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.