Peg and susan are discussing migration. peg says that migration is associated with seasonal changes and that animals usually migrate in large groups. susan says that migration occurs when animals travel from one physical area to another and that it's voluntary. who is correct?

a. only peg
b. both peg and susan
c. neither peg nor susan
d. only susan

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.