What does the Lorax say may stop the once-ler from making more thneeds

they will run out of

Explanation:

They would run out of trees and destroy the forest creatures home if he kept destroying the forest and using the trees

the correct answer is d.

hope this

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.