Company A has initiated a project to update their online ordering system.

 An organizational chart is a tool that helps to visualize the structure and hierarchy of an organization, as well as the roles and responsibilities of its members. It can also show the relationships and interactions between different units, departments, or teams within the organization. An organizational chart can help the business analyst to identify the missing project stakeholders by showing who are involved in or affected by the online ordering system, such as the purchasing department. A business case is a tool that helps to justify the need and value of a project or initiative, as well as the costs and benefits associated with it. It does not provide information about the project stakeholders. A business analysis plan is a tool that helps to define the scope, approach, activities, deliverables, and schedule of the business analysis work. It does not provide information about the project stakeholders. A business analyst communication plan is a tool that helps to determine the communication needs, methods, frequency, and channels for the business analysis work. It does not provide information about the project stakeholders. References: PMI Professional in Business Analysis (PMI-PBA)® Examination Content Outline1, PMI Guide to Business Analysis2, Business Analysis for Practitioners: A Practice Guide3, Organizational Chart - What is an Organization Chart? Definition, Types, Tips, Tutorial, and Examples