Final answer:
The primary condition for unionization is dissatisfaction and belief in collective action as a remedy. This includes issues like low pay and poor working conditions, but these factors are affected by beliefs about the efficacy of collective action and variations in cultural acceptance and the role of government regulations.
Step-by-step explanation:
The most important condition leading to unionization is c. dissatisfaction and a belief that collective action will provide a remedy. This fundamental reason encompasses low pay, poor management, and poor working conditions as specific issues that may contribute to overall dissatisfaction. However, it is the belief that by banding together, workers can effectively address these issues that is key to union formation. Conversely, in some cases, enhanced government regulations and social benefits can reduce the perceived need for unions, as laws may cover aspects traditionally addressed through collective bargaining.
In the global context, union membership varies greatly by country, with the United States having a relatively low percentage compared to other high-income economies. Differences in cultural acceptance and the extent of union coverage, where wages are influenced by union negotiations even for non-members, can significantly affect union popularity. The fact that in some countries individuals' pay is determined by collective bargaining, despite not being formal union members, underscores the varying roles unions play in different economic environments.