Answer:
Zero frequency:
![351-400](https://img.qammunity.org/2022/formulas/mathematics/college/flwa83gnv59c3yulgvya6xd1qsed3j7y0i.png)
A peak:
![851-700](https://img.qammunity.org/2022/formulas/mathematics/college/f7shbuy8qbtit17mujxuu3z37hwfckoijz.png)
Explanation:
A histogram is a graphical representation that organizes a data in the form of rectangular bars.
From the given diagram of histogram,
Zero frequency:
![351-400](https://img.qammunity.org/2022/formulas/mathematics/college/flwa83gnv59c3yulgvya6xd1qsed3j7y0i.png)
A peak is a bar that is taller than the rest of the bars.
A peak:
![851-700](https://img.qammunity.org/2022/formulas/mathematics/college/f7shbuy8qbtit17mujxuu3z37hwfckoijz.png)