Final answer:
Strong unions help strengthen the working class socio-economic group by negotiating fair wages, benefits, and better working conditions.
Step-by-step explanation:
Strong unions help strengthen the working class socio-economic group. Unions work to negotiate fair wages, benefits, and better working conditions for their members. By advocating for the rights and interests of workers, unions help to improve the socio-economic status of the working class, ensuring that they have access to a higher standard of living.