Answer:
b. labor unions
Explanation:
The cartoon shows a man wearing a ribbon that says One big union of all the workers, and a robe that spells I.W.W, which stands for Industrial Workers of the World, a labor union.
This means the cartoon shows that labor unions were the ones fighting for the workers and better labor conditions, including the fight against child labor.
Child labor was practiced frequently at the beginning of the 20th century, as a consequence of the Industrial Revolution. Almost 50% of workers were children under the age of 14. Children would work long hours in unsafe conditions, often getting sick. They were also underpaid, earning sometimes around 20 percent of the wage of adult workers There were children as young as four years working in the factories under the dangerous condition.
I.W.W. was formed in 1905. and hoped to secure better working conditions for everyone, especially those unrecognized groups such as children, women, and immigrants. They wanted to organize all the workers of the US and fight against the capitalistic exploitation of the workers.