What effect did anti-labor union laws such as the combination acts have on the working class?
workers were further motivated to protest against the unfair polices.
workers had to continue working in harsh conditions and for low wages.
working conditions improved because factory owners feared a backlash from workers.
the working class returned to agricultural life and achieved financial success.

The answer is Workers were further motivated to protest against the unfair policies

Explanation:

The Combination Acts or Laws initially prohibited and then regulated  trade unions and strike actions. They were issued between 1799 and 1800 by the United Kingdom's parliament due to the rise and spread that the Labour Movement was taking, and it simplified the legal prosecution process of Trade Unions, and it allowed their suppression trough government forces, including the army. However, due to the vast spread the Labour Movement was taking, they could not be applied in full, and they were  abolished by the Parliament in 1824 after popular and workers´ pressure. This lead to being the first country to allow trade unions.