Process Layering and Isolation helps in:

Process layering and isolation is a design principle primarily used in information systems to ensure that different operations or processes within a system are distinctly separated and managed independently. This separation allows for operations to be handled by different personnel or teams, which can lead to clearer accountability and reduce the risk of errors or fraud.

By breaking up operations managed by different personnel, organizations can implement checks and balances within their systems. For instance, one team may be responsible for inputting data, while another team is responsible for reviewing and approving changes. This segregation helps to enhance the integrity of processes, as it minimizes the potential for one individual to manipulate data without oversight.

In contrast, the other options do not align with the primary goal of process layering and isolation. While combining operations for efficiency and centralizing data management can be beneficial strategies in certain contexts, they do not specifically capture the essence of process layering and isolation. Furthermore, enhancing physical security is more related to safeguarding the physical assets of an organization rather than managing operational processes through separation and delegation. Therefore, the correct answer reflects the core benefits that process layering and isolation brings to operational management within information systems.