The correct answer is: A) Public and private sectors.
Kerala has a mixed economy, which means that it has a combination of both public and private sectors. The public sector is made up of government-owned enterprises, while the private sector is made up of privately owned enterprises. The government plays a significant role in the economy of Kerala, and it owns and operates a number of important industries, such as electricity, water, and transportation. However, the private sector is also very important in Kerala, and it accounts for a significant share of the economy.
The other options are incorrect because they do not accurately describe the economy of Kerala. Option B is incorrect because Kerala does not have a command economy. A command economy is an economic system in which the government controls all aspects of the economy, including production, distribution, and prices. Option C is incorrect because Kerala does not have an agrarian economy. An agrarian economy is an economy that is based on agriculture. Kerala is a relatively industrialized state, and agriculture accounts for a relatively small share of the economy. Option D is incorrect because Kerala does not have a centralized planning system. A centralized planning system is a system in which the government plans and controls the entire economy. Kerala has a mixed economy, which means that the government does not plan and control the entire economy.