Which of the following statements is/are NOT correct about the occupational structure?

A developed economy with industries and infrastructure can accommodate less workers in the secondary, tertiary and quaternary sector.

Agriculture, forestry, fishing and mining are classified as primary activities manufacturing as secondary, trade, transport, communication and other services as tertiary and the jobs related to research, information technology and developing ideas as quaternary activities. The proportion of working population engaged in these four sectors is a good indicator of the levels of economic development of a nation. This is because only a developed economy with industries and infrastructure can accommodate more workers in the secondary, tertiary and quaternary sector. If the economy is still in the primitive stages, then the proportion of people engaged in primary activities world be high as it involves extraction of natural resources.