Question

workers, aged 10 - 14, in the united states: 1870 - 1930 (thousands)
year workers aged 10 - 14 workers aged 10 - 14 as % of workforce
1890 1,504 0.50
1910 1,622 4.34
1930 667 1.37
source: u.s. census bureau
which reason contributed to the trend shown in this table?
a the number of people joining labor unions decreased.
b the number of factories using assembly lines decreased.
c a progressive movement worked to stop the use of child labor.
d a political movement worked to lower taxes for businesses.

Explanation:

The table shows a decrease in the number of 10 - 14 - year - old workers and their percentage in the workforce from 1890 to 1930. The Progressive movement in the early 20th - century America aimed at social reforms including ending child labor, which would explain this decline.

Answer:

C. A progressive movement worked to stop the use of child labor.