What is the source of cocaine?

Explanation

**Step-by-Step Solution:**

1. **Definition of Cocaine**: Cocaine is a powerful stimulant drug that is derived from the coca plant. It is known for its potent effects on the central nervous system and is classified as a narcotic.

2. **Historical Context**: Cocaine has been used for thousands of years, particularly in the Andes region of South America. Indigenous people chewed coca leaves to alleviate fatigue, hunger, and the effects of high altitude.

3. **Source of Cocaine**: The primary source of cocaine is the leaves of the coca plant (Erythroxylum coca). These leaves contain alkaloids that can be processed to extract cocaine.

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