What is the main function of the All-China Federation of Trade Unions?

The All-China Federation of Trade Unions (ACFTU) serves as the primary organization to represent the interests of the nearly 90 million workers in China. It unites various local trade unions across the country and operates under the auspices of the Chinese Communist Party. Its main functions include advocating for workers' rights, negotiating with employers on behalf of workers, and participating in the governmental policymaking process concerning labor-related issues.

This representation is significant in the context of China's labor landscape, where independent trade unions are not permitted, and the ACFTU plays a crucial role in maintaining state control over labor relations while also addressing the needs of workers, even if that representation is often aligned with government policies.

The other options do not accurately represent the main function of the ACFTU. The organization does not focus on foreign workers, nor does it act as a global representative for labor unions. Although enhancing employment standards may be a part of its broader goals, the core mission is the representation of domestic workers, making option C the most accurate choice.