The correct answer isDbecause the most important reason for usingimmutable backupsfrom a data protection and regulatory compliance perspective is that the datacannot be tampered with. The key compliance value of immutability is preserving integrity and protecting records from unauthorized alteration or deletion. This is especially important when proving that protected data and retained records remain trustworthy.

The other options are less important in this context:

A. Immutable backups can be used for data recovery testingis beneficial, but not the main regulatory reason.

B. Data contains time stamps that indicate when it was backed upis useful information, but not the core compliance value.

C. Immutable backups enable effective disaster recovery responseis important operationally, but the question emphasizes data protection and regulatory compliance.

Exact Extracts supporting the answer:

“The BEST method that provides message integrity authentication of the sender ' s identity and nonrepudiation is digital signatures.”

“The MOST important consideration when transmitting personal information across networks is ensuring the privacy of the personal information.”

“The purpose of system certification is to demonstrate that security controls and processes are assessed for effectiveness.”

“The MOST important principle of data protection that a risk practitioner should advocate for is that data should be accurate.”

These extracts support that from a compliance and data protection perspective, preserving integrity and preventing tampering is the highest concern. Therefore,Dis the best answer.

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