Which functionality cannot be performed with Data Visualization to shape stories?

The functionality described in the provided answer is correct because the Data Visualization tool is designed primarily for creating and manipulating visual narratives around data. Each of the other functionalities relates directly to the core capabilities of the tool—allowing users to resize canvases for better layout, enhance narrative transitions by rearranging visual elements, and create filters that help users to hone in on specific data points of interest.

In contrast, combining multiple projects into one using a single Share icon does not align with the tool's design for individual project manipulation and storytelling. Instead, sharing typically involves exporting or distributing a single cohesive visual or report rather than aggregating several distinct projects into one. Thus, the fourth option accurately identifies a limitation within the context of the data visualization functionalities offered for shaping stories.