One benefit of using UPN in this scenario is that a single activity box can answer Who, What, When, Why, and How. UPN is a notation system that helps to create simple and clear process maps using activity boxes and arrows. An activity box represents a step or task in a process, and contains five elements: Who (the role or actor who performs the task), What (the name or description of the task), When (the trigger or condition that initiates the task), Why (the purpose or goal of the task), and How (the method or tool used to perform the task). By using a single activity box to answer Who, What, When, Why, and How, UPN helps to provide a concise and comprehensive view of each step or task in a process, and avoid confusion or ambiguity. The other options are either incorrect or irrelevant. Option A is incorrect because UPN recommends using no more than 10 activity boxes per process map to avoid complexity and clutter. Option C is irrelevant because UPN does not use different shapes to represent key parts of a process, but rather uses different colors to indicate different levels of detail. References:
https://trailhead.salesforce.com/en/content/learn/modules/business-analysis-process-mapping/understand-process