How does the DTS system ensure data security for personal information?

The correct answer highlights the importance of implementing strict access controls and encryption measures in the DTS system to protect personal information. Access controls limit who can view or edit data based on their role, ensuring that only authorized personnel have access to sensitive information. This minimizes the risk of unauthorized access and data breaches.

Encryption is another critical component that secures data both at rest and in transit. This means that even if data is intercepted or accessed without authorization, it remains unreadable without the proper decryption keys. By utilizing these methods, DTS enhances the overall security of personal information, adhering to best practices in data protection.

Other options, while they may seem relevant, do not contribute effectively to data security. User-written passwords can vary widely in strength and are less reliable than a robust policy for password management. Backing up data is important for recovery but does not directly address the protection of that data against unauthorized access. Allowing users to share accounts undermines security by making it difficult to track who accesses the system and increases the risk of data exposure. Thus, option B clearly stands out as the most effective means of ensuring data security within the DTS framework.