What is a chart primarily used for?

A chart is primarily used to summarize information visually, making it easier for the audience to interpret and understand complex data at a glance. By using visual representations such as bars, lines, or pie slices, charts transform numerical data into a format that highlights trends, comparisons, and relationships between variables. This allows the viewer to grasp insights quickly, which is particularly valuable in business settings where decision-making relies on clear and concise data presentation.

In contrast, the other options are not the primary function of charts. For instance, displaying text information typically relies on written documents or bullet points. Presenting audio data is outside the realm of charts, as this type of data would require auditory formats rather than visual representation. Lastly, creating narrative content involves storytelling techniques, often better suited to written or spoken formats rather than visual summaries, which are effectively accomplished with charts.