State the age at which adolescence usually begins and the age up to which it lasts.

Explanation

**Step-by-Step Solution:**

1. **Understanding Adolescence**: Adolescence is a significant developmental stage characterized by various changes, including physical, emotional, and behavioral transformations.

2. **Starting Age of Adolescence**: The adolescence period usually begins around the age of 11 years. This is when individuals start to experience the onset of puberty and related changes.

3. **Ending Age of Adolescence**: Adolescence typically lasts until the age of 18 to 19 years. This marks the transition into adulthood, where individuals have reached sexual maturity and have completed most of their physical growth.

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