Which form of information enhances documents with visual appeal and helps in memory retention?

The correct answer highlights the importance of pictorial information in enhancing documents. Pictorial information pertains to images, illustrations, and other visual elements that can accompany text, making the content more engaging and easier to digest. This form of information is particularly effective in aiding memory retention because visuals can create stronger mental associations compared to text alone. When information is presented pictorially, it often allows the audience to grasp complex concepts more quickly, as they can visualize the information rather than just read it. This can include charts, infographics, diagrams, and photographs, all of which serve to capture the viewer's attention and help reinforce the message being conveyed.

Graphical information, while similar, may encompass a broader category that includes elements like charts and graphs, which are more about data representation rather than purely pictorial elements. Qualitative information focuses more on descriptive characteristics rather than visual enhancements, and network information tends to refer to data relating to networks, such as those in technology and communications, rather than visual appeal. Thus, pictorial information stands out as the best answer in terms of enhancing visual appeal and contributing to memory retention.