..The chart below lists four countries, along with their main economic activities. Country A: engineering, manufacturing
Country B: education, research
Country C: agriculture, mining
Country D: retail sales, tourism
Which country is most likely the least developed?

Country C

Explanation:

an economy that is producing raw materials is typically the least developed, as most other economic sectors that are described need industrialization, manufacturing, or a service/technology economy, which is usually more developed than a industrial economy.