The conclusion that can be drawn about the level of economic development in countries with different specializations in a commodity chain is that quaternary sector specializations would earn the highest wages.
Quaternary sectors involve knowledge-based activities that include services such as information technology, research and development, financial planning, and education. This sector typically represents a more advanced stage of economic development and is associated with higher wages due to the specialized skills and knowledge required. In contrast, primary sectors (like agriculture and mining) generally involve lower wages, as do secondary sectors (manufacturing), while the tertiary sector (services) can vary widely but is often less specialized than the quaternary sector.