Labor unions lost members in the 1920s for all of the following reasons EXCEPT:. a) companies supported propaganda campaigns that linked unions with socialism.
b) companies began to adopt a program of "welfare capitalism."
c) labor unions were tarnished by the 1919 labor upsurge.
d) some corporations began to provide employees with pensions and medical insurance.
e) through collective bargaining, labor unions had secured a national eight-hour day.