Which of the following indicates a union's primary focus?

The primary focus of a union is economic gain for workers. Unions are labor organizations formed to represent the collective interests of workers in negotiating with employers over wages, working conditions, benefits, and other employment-related matters. Their main goal is to improve the economic status and working conditions of their members, often through collective bargaining, which is the process of negotiating the terms of employment on behalf of the union members.

This aim encompasses not only securing better pay but also ensuring that labor rights and benefits are upheld. By focusing on economic gains, unions strive to create a more equitable workplace where workers have a stronger voice in their employment conditions, thereby enhancing their overall livelihood and job satisfaction.

The other options do not align with the fundamental mission of unions. While maximizing employer profits or promoting corporate-friendly policies might serve certain interests, they typically conflict with the objectives of unions which seek to prioritize workers’ rights and enhance their welfare through economic benefits. Social welfare can be a component of a union's broader agenda, but the primary focus remains on the economic well-being of its members.