The author’s claim that, since the mid-1970’s, a new strategy has emerged in the unionizat
A.described more fully the attitudes of clerical workers toward labor unions
B.compared the organizing strategies employed by private-sector unions with those of public-sector unions
C.explained why politicians and administrators sometimes oppose unionization of clerical workers
D.indicated that the number of unionized public-sector clerical workers was increasing even before the mid-1970’s
E.showed that the factors that favored unionization drives among these workers prior to 1975 have decreased in importance