Which requirement must be met to create a summarized line, bar, or area chart?

To create a summarized line, bar, or area chart, the specific requirement that one needs to meet is that the worksheet must be grouped across a tab with at least two group by columns. This requirement is essential because grouping data allows for meaningful aggregation and categorization, enabling the chart to effectively represent relationships within that data.

When multiple group by columns are utilized, it adds depth to the analysis, as it allows for comparison across different categories or dimensions, thereby providing a clearer visualization of trends and patterns in the data. Without this grouping, the chart may not accurately reflect the insights that can be drawn from the data set.

The other options lack the necessary criteria for creating such charts. For instance, having only charts in the worksheet does not provide the required underlying data structure, and a single column of data would limit the informational depth available for summarization. Additionally, formatting in color is primarily for visual appeal and does not contribute to the analytical components needed for chart creation. Hence, the focus on at least two group by columns is indispensable for effective summarization in charts.