Answer- B
Recent reports suggest that Syria has acquired the title of the world's largest narco-state. This is because the majority of its foreign currency earnings are generated from the production and export of Captagon, a highly addictive amphetamine known as "poor man's coke."
Collins Dictionary defines a narco-state as a country whose economy heavily relies on the illegal trade of narcotics, and Syria falls under this category as the illegal trade of Captagon accounts for over 90% of its foreign currency earnings.