The _____ aided big business by reducing the power of labor unions in the United States. Specifically, it meant that unions could no longer demand that only union members be hired by businesses, nor engage in secondary boycotts of businesses selling or handling nonunion goods.

Athe National Interstate and Defense Highways Act of 1956

Bthe Taft-Hartley Act of 1947

Cthe Servicemen's Readjustment Act of 1944

Dthe William Levitt Act of 1958