What type of music is intended to introduce or represent television program, radio program, video game, or movie?

Incidental music is music in a play, television program, radio program, video game, or some other presentation form that is not primarily musical.

Explanation:

the correct answer is d.

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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.