During adolescence, several changes occur in the human body. Mark one change associated with sexual maturation in boys

Options

A. loss of milk teeth
B. increase in height
C. cracking of voice
D. weight gain

Explanation

**Step-by-Step Solution:**

1. **Understanding Adolescence**: Adolescence is the developmental stage when individuals undergo various physical and hormonal changes as they transition from childhood to adulthood. This period is marked by the attainment of sexual maturity.

2. **Identifying Changes in Boys**: During adolescence, boys experience several specific changes associated with sexual maturation. These changes can include physical growth, voice changes, and development of secondary sexual characteristics.

3. **Evaluating the Options**: The question asks for one change associated with sexual maturation in boys. The options provided include:
- A) Loss of milk teeth
- B) Increase in height
- C) Cracking of the voice
- D) Weight gain

4. **Analyzing Each Option**:
- **Option A (Loss of milk teeth)**: This change occurs before adolescence and is not specific to sexual maturation.
- **Option B (Increase in height)**: While boys do experience an increase in height during adolescence, this change is not exclusive to sexual maturation.
- **Option C (Cracking of the voice)**: This is a specific change that occurs in boys during puberty as their voice box develops and deepens, marking a clear sign of sexual maturation.
- **Option D (Weight gain)**: Similar to height, weight gain is a general change that occurs in both boys and girls during adolescence and is not specific to sexual maturation.

5. **Conclusion**: Based on the analysis, the change specifically associated with sexual maturation in boys is the **cracking of the voice**.

**Final Answer**: The change associated with sexual maturation in boys is the **cracking of the voice**.

---