Which of the following roles should be responsible for data normalization when it is found that a new system includes duplicates of data items?

A business system owner focuses on the system's functionality and alignment with business needs, not the hands-on management of data quality issues like normalization.

A data steward is responsible for the overall quality, integrity, and usability of data within an organization, including defining and enforcing data standards and policies. Their specific duties often involve identifying and resolving data quality issues such as duplicates through processes like normalization.

A Database Administrator (DBA) manages the technical aspects of the database system, such as performance and security, but typically implements data quality policies defined by data stewards rather than creating them.

An application manager oversees the lifecycle and operations of a specific application, but their primary focus is not the governance and quality of the underlying data across systems.