pleass answer if you sure other wise skip it

Scholars and practitioners operating within the unitary framework of workplace management question the relevance of trade unions in the modern workplace. (a) Define the term trade union and evaluate the advantages and disadvantages of its involvement in a workplace (focus on advantages and disadvantages if any, to all parties of the industrial relations system) (b) Explain how a unitary perspective is reflected in the workplace in terms of how it is positioned by employers as an advantage in employment relations over that of trade union representation