Which of the following is the MOST relevant control to address the integrity of information?

A redundant server system addresses availability by ensuring continuous operation, but it does not directly prevent unauthorized modification of data.

Encryption of email primarily addresses confidentiality by protecting data from unauthorized viewing, not unauthorized modification during transit or at rest.

An Internet security application provides general protection against various threats, but specific access controls are more granular and directly targeted at preventing integrity breaches.

Assignment of appropriate access permissions is the most relevant control for information integrity because it directly dictates who can create, modify, or delete data. By restricting write access to only authorized individuals and processes, it prevents unauthorized or accidental changes, ensuring that information remains accurate and complete.