The correct option is C. Pie chart. Explanation of the Correct Answer A pie chart is a circular statistical graphic that is divided into slices to illustrate numerical proportions. Each slice of the pie represents a category's contribution to the total, and the entire pie represents 100% of the data. Key Characteristics of a Pie Chart: - No Axes: Unlike other chart types, a pie chart does not have X and Y axes. Instead, it visually represents data as parts of a whole. - Proportional Representation: The size of each slice is proportional to the quantity it represents, making it easy to compare parts to the whole. - Ideal for Categorical Data: Pie charts are best used for displaying data that can be divided into categories, such as market share, survey results, or demographic data. Why the Other Options Are Incorrect A. Area Chart - Axes Present: An area chart displays quantitative data over time or categories, with both X and Y axes. The area between the line and the axis is filled with color or shading, making it easy to visualize the magnitude of values. - Use Case: It is typically used to show trends over time, making it unsuitable for the question. B. Bar Chart - Axes Present: A bar chart uses rectangular bars to represent data. It has both X and Y axes, where one axis represents categories and the other represents values. - Use Case: Bar charts are effective for comparing different groups or tracking changes over time, which again does not fit the criteria of having no axes. D. Scatter Diagram - Axes Present: A scatter diagram (or scatter plot) displays values for typically two variables for a set of data. It has both X and Y axes, where each point represents an observation in the dataset. - Use Case: Scatter diagrams are used to identify relationships or correlations between two variables, which is not applicable to the question. Summary of Key Points

• Pie Chart: No X and Y axes; represents parts of a whole.
• Area Chart: Has both axes; used for trends over time.
• Bar Chart: Has both axes; used for comparing categories.
• Scatter Diagram: Has both axes; used for showing relationships between two variables.

Revision Summary

• A pie chart is the only chart type listed that does not display X and Y axes.
• It visually represents data as slices of a whole, making it ideal for categorical data.
• Other chart types (area, bar, scatter) all include axes and serve different purposes in data representation.
• Understanding the characteristics of each chart type is crucial for selecting the appropriate one for data visualization.