The elements of the POPIT model that need further investigation are people and process. This is because the staff members have raised concerns about the compatibility of the new automated system with the current process of handling parcels without barcodes or with obscured barcodes, as well as the impact of the system on their job security. These concerns relate to the people element, which covers the roles, skills, attitudes, and behaviors of the staff, and the process element, which covers the activities, tasks, and procedures involved in delivering a service or product. Option C is the correct answer.

The business analysis documentation distinguishes stakeholder categories and provides examples including customers, employees, managers, partners, suppliers , and others. The scenario clearly includes a supplier : the local builder is providing goods/services (construction) to ForestRetreat, which fits the definition of a supplier. It also includes a partner : the volunteer organisation is “working with” ForestRetreat to provide transport on its behalf, which aligns with the definition of partners as organisations that work with an organisation to provide services on its behalf.

A manager is represented by the senior officer who has been asked to oversee development of the new plot. The glossary explicitly lists managers as a distinct stakeholder category, separate from employees. While managers are employees in a general HR sense, the stakeholder categorisation used here treats managers and employees as separate groups because they often have different interests, influence, and perspectives on change.

What is not represented is the employee stakeholder group (non-managerial staff). No operational staff, event staff, customer service staff, or other employees are mentioned—only a manager (senior officer). Therefore, the missing stakeholder group from the options is Employee.