A clothing company is deciding whether to make wool sweaters from yarn that is spun and dyed by individual craftspeople or from yarn that is mass-produced by machines.

Handcrafted yarn requires individual craftspeople to spin and dye it, so producing it generally takes more time and labor than machine production. Because less can be made with the same resources and time, handcrafted yarn is scarcer. Choice D correctly identifies this; mass production usually makes yarn less scarce, not more scarce.

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