Check totals are IT controls that verify the accuracy and completeness of data by comparing the sum or count of data records or data fields with a predetermined or expected value. Check totals can help detect and prevent errors, omissions, or alterations in data entry, processing, or transmission. Check totals can also help identify and correct data discrepancies or anomalies. Therefore, check totals are the most useful IT controls in mitigating the risk associated with inaccurate data. The other options are not the best answers because they do not directly address the risk of inaccurate data. Encrypted storage of data is an IT control that protects the confidentiality and integrity of data by preventing unauthorized access or modification. However, encryption does not ensure the accuracy or validity of the data itself. Links to source data are IT controls that provide traceability and transparency of data by allowing users to access or view the original data from which the derived or aggregated data is obtained. However, links to source data do not verify or correct the data quality or consistency. Audit trails for updates and deletions are IT controls that record thehistory and changes of data by capturing the date, time, user, and action performed on the data. Audit trails can help monitor and review the data activities and transactions, but they do not prevent or detect the data errors or inaccuracies. References = CRISC Review Manual, pages 164-1651; CRISC Review Questions, Answers & Explanations Manual, page 722