Which trade union type primarily involves government job representation?

The choice indicating public sector unions is correct because these unions represent employees who work for government agencies at the local, state, or federal level. Public sector unions advocate for the rights and interests of workers in government jobs, which can include teachers, police officers, firefighters, and various civil service employees. Their focus is on negotiating terms of employment, benefits, and working conditions specifically for those who serve in public roles, distinguishing them clearly from unions in the private sector that represent workers in private companies or organizations.

In contrast, private sector unions advocate for workers in industries that are privately owned and operated. Mixed sector unions involve members from both public and private sectors, while independent unions function independently from larger national or international union organizations. Thus, the mention of public sector unions accurately highlights the specific focus on government job representation.