Which piece of evidence best supports schlosser's claim that meatpacking is the most dangerous job in the united states?
a. the injury rate in a slaughterhouse is about three times higher than the rate in a typical american factory.
b. today only one-third of ibp's workers belong to a union. most of the nonunion workers are recent immigrants
c. the unrelenting pressure of trying to keep up with the line has encouraged widespread methamphetamine use among meatpackers.
d. despite the use of conveyer belts, forklifts, dehiding machines, and a variety of power tools, most of the work . . is still performed by hand.