Which is the most conspicuous change (clearly visible change) in boys and girls during puberty ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Puberty**: Puberty is a developmental stage that occurs during adolescence, where boys and girls undergo various physical and hormonal changes.

2. **Identifying Visible Changes**: During puberty, both boys and girls experience several visible changes, including changes in body shape, voice, and hair growth.

3. **Focusing on Conspicuous Changes**: Among all the changes that occur, we need to identify the most conspicuous or clearly visible change that occurs in both genders.

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