What is the age of adolescence in human according to WHO?

Explanation

**Step-by-Step Solution:**

1. **Identify the Organization**: The question asks about the age of adolescence according to the World Health Organization (WHO).

2. **Understand the Definition of Adolescence**: Adolescence is a developmental stage that occurs between childhood and adulthood, characterized by physical, emotional, and social changes.

3. **Locate the Age Range**: According to the WHO, adolescence is defined as the age range from 10 to 19 years.

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