Who among the following is responsible for supervision, secure data storage, transport, and implementation of business rules?

The role that encompasses supervision, secure data storage, transport, and the implementation of business rules is best represented by data custodians. Data custodians have a custodial responsibility, which means they are tasked with the technical aspects of managing and protecting data. This includes ensuring that data is securely stored and properly transported between systems, as well as upholding the business rules that govern data use and access.

Data custodians often work closely with data stewards, who focus more on the governance aspect, such as data quality and policy enforcement. While data controllers and data processors also have roles related to data handling, it is the data custodians who directly manage the storage and transport mechanisms, thus ensuring compliance with business regulations and the overall security of data assets. Their responsibilities are critical for maintaining the integrity and security of the data in an organization.