Final answer:
Data redundancy occurs when multiple departments in an organization independently collect and store the same data, leading to inefficiencies.
Step-by-step explanation:
Data redundancy occurs when different groups in an organization independently collect the same piece of data and store it independently of each other. This often happens because systems in organizations grow independently without a company-wide plan, leading to each department such as accounting, finance, or sales to have its own system and data files. The result is duplicated efforts and storage which can lead to inefficiencies and discrepancies in data across the organization.