Which of the following is a benefit of joining a trade union?

Joining a trade union offers numerous benefits, with one of the primary advantages being improved pay and working conditions. Trade unions negotiate on behalf of their members to secure better wages and ensure fair labor practices within the workplace. This collective bargaining power allows unions to advocate for increases in salary, better benefits, and safer work environments. By representing the voices of a larger group, unions can effectively push for improvements that might be difficult to achieve for an individual employee alone.

With regards to the other choices, while expanding tax deductions, securing greater job security without qualifications, or increasing personal leave days may be desirable, they are not directly associated with the primary role or functions of a trade union. Unions primarily focus on negotiating terms of employment and advocating for their members’ rights in the workplace.