What is the purpose of selecting a chart theme for popup trend graphs?

Selecting a chart theme for popup trend graphs serves the purpose of configuring the overall visual style of the graph, which includes the look and colors of the shapes representing data points. A chart theme enhances the readability and visual appeal of the data being presented, allowing users to easily distinguish different elements within the graph. This customization is crucial for effective communication of trends and patterns, as various colors and styles can highlight important data changes and make the graph more intuitive for viewers.

Options related to setting background color or controlling data visibility are more specific and do not encompass the broader role of themes in defining the aesthetics of different data representations. Similarly, defining data series is focused on the structural aspects of the data rather than its visual representation, which is why the choice that emphasizes the configuration of visual elements is the most appropriate in this context.