The correct answer is Agriculture.
Agriculture is the primary occupation of the majority of the population in Chhattisgarh. The state is home to a large number of small farmers who cultivate a variety of crops, including rice, wheat, maize, pulses, and oilseeds. The state also has a significant livestock population, which provides milk, meat, and other products.
Manufacturing is a secondary occupation in Chhattisgarh. The state has a number of small and medium-sized industries, which produce a variety of goods, including textiles, food processing, and chemicals.
Services is a tertiary occupation in Chhattisgarh. The state has a growing service sector, which includes banking, insurance, and tourism.
Mining is a small but important occupation in Chhattisgarh. The state has a number of coal mines, which provide a significant source of revenue for the state government.
In conclusion, the primary occupation of the majority of the population in Chhattisgarh is Agriculture.