Which of the following options is not listed as a way to visualize Clusters?

The correct choice indicates that a Bubble Chart is not listed as a way to visualize Clusters within the context provided. Visualizing data clusters often involves methods that highlight relationships and arrangements of items within a specific grouping, which the other options effectively demonstrate.

The Cluster Wheel is a visual representation that efficiently displays clusters in a circular fashion, revealing hierarchical relationships. Circle Pack arrangement also serves a similar function, providing a radial layout that illustrates cluster relationships and sizes based on data attributes. Dial Visualization can depict clustered data through segmented displays, emphasizing comparative metrics within clusters.

In this context, while a Bubble Chart can represent data points based on two or more dimensions, it primarily shows individual data points rather than clusters, making it less suitable for visualizing cluster structures specifically. Thus, identifying the Bubble Chart as the option not listed aligns with the goal of focusing on dedicated cluster visualization techniques.