How has cattle ranching changed? in king corn

Before World War II, most Americans had never eaten corn-fed beef. Raised on pasture, cattle reared before the 1950s usually took two or three years to be ready for the slaughterhouse. Steers were fed grain only occasionally and in small quantities, and farmers tended to use corn as a supplement—not a staple—of their livestock’s diets.

Explanation:

the answer is c.

by: nicholas dooley