The most accurate conclusion is that quaternary sector specializations would earn the highest wages.
This is because the quaternary sector, which includes knowledge-based activities involving services such as research and development, financial services, and information technology, typically yields higher wage levels due to the skills and education required. In contrast, primary sector jobs (agriculture, mining) usually offer lower wages due to the labor-intensive nature of the work, while secondary (manufacturing) and tertiary (services) sectors may have varying wage levels but generally don't reach the high levels associated with quaternary sector roles.