Concept:In developing countries, most workers depend directly on natural resources for their livelihood.
Explanation:The labour force is divided into primary, secondary, and tertiary sectors.
The primary sector involves activities like farming, fishing, mining, and forestry.
Developing economies have limited industrialisation, so a large share of workers are engaged in primary activities.
These activities provide raw materials for other sectors.
Hence, the primary sector employs the largest percentage of the labour force in developing countries.
Answer:C. primary sector