Which of the following can be said about labor movements by the end of the 19th century?

they had successfully organized skilled workers into unions.
they had won vast public support for their cause.
they had secured the right to bargain collectively.
they had forced the government to pass workplace safety laws.

The labor movements began at the beginning period of the Industrial Revolution, which was a time in which many business owners treated skilled workers unfairly. Because of this, those workers were inclined to form a union in order to achieve more stability and better working conditions. 

The answer is the first option: They had successfully organized skilled workers into unions.