Which of the Following Most Accurately Indicates Changes in the Size

Multiple Choice

Which of the following most accurately indicates changes in the size of the union sector in the United States?

A) As a share of the labor force, union membership grew substantially during 1935 through 1955 but has declined substantially since the mid-1950s.
B) As a share of the labor force, union membership declined substantially during 1935 through 1955 but has grown substantially since the mid-1950s.
C) As a share of the labor force, union membership has steadily grown from less than 10 percent in 1935 to more than 40 percent today.
D) Union membership has been approximately 20 percent of the labor force during the last five decades.