Which of the following security concepts is the best reason for permissions on a human resources fileshare to follow the principle of least privilege?

The principle of least privilege dictates that users should only have the minimum access necessary to perform their job functions. For a human resources fileshare, this is primarily to protect the confidentiality of sensitive employee data (e.g., salaries, health information, performance reviews). Limiting access ensures that only authorized personnel can view this private information, preventing unauthorized disclosure. While integrity (ensuring data accuracy) and availability (ensuring data is accessible when needed) are also important security goals, they are not the best reason for applying least privilege to HR fileshares. Least privilege helps maintain integrity by preventing unauthorized modifications, and it indirectly supports availability by reducing the risk of data corruption or deletion. However, the most direct and critical security concept protected by restricting access to sensitive HR data is confidentiality. Non-repudiation (proving an action occurred) is unrelated to this specific scenario.