Which of the following is a valid chart type in Excel?

A pie chart is a valid chart type in Excel used to represent data as slices of a whole, showing the proportions of different categories relative to the total. It effectively illustrates how parts make up a whole, making it easy to visualize the relative sizes of different data components. Pie charts are particularly useful when you want to display the percentages or proportions of various categories in a dataset.

In Excel, pie charts allow for clear visual communication of data, emphasizing the relationships between parts of a dataset and making it accessible for analysis and presentations. While other chart types may serve different purposes, the pie chart is specifically designed for comparative analysis of categorical data in a visually digestible format.