The communication method was inappropriate because the BA sent a 600-page document without any summary or explanation to all stakeholders, which is likely to overwhelm and confuse them. The BA should have chosen a more suitable format and level of detail to communicate the status of the requirements management process, such as a dashboard or a report. The business rules, the distribution, and the models were not the main issues in this situation. Reference: BABOK Guide v3, page 50; CCBA Mock Test, question 17