How can additional information about a business term be stored in the dictionary?

The reasoning for selecting the option regarding adding custom attributes to the associated diagram elements as the correct answer is rooted in the practical functionality provided in process management tools. This approach allows users to enhance the context around specific business terms contained within their diagrams, enabling a richer repository of information directly tied to the visual representations of workflows and processes.

By adding custom attributes, users can capture relevant details like definitions, purpose, usage guidelines, and other metadata that enhances understanding of each term's significance within the process. This method promotes more intuitive access to information, as attributes are associated directly with the elements they pertain to, making it easier for stakeholders to grasp context and usage right on the diagrams themselves.

On the other hand, custom modeling conventions and the creation of sub-categories provide a structural approach to organizing information but do not directly tie additional information to the specific business terms in the context of process diagrams. While these strategies can contribute to an organized system, they may not deliver the immediate contextual reference that custom attributes provide.