What major issue arises if Jim's IT staff do not regularly review backup logs?

The correct choice highlights a significant concern regarding the reliability and effectiveness of backups. If Jim's IT staff fail to regularly review backup logs, they may not identify potential issues that could render the backups unusable. Backup processes can encounter various problems, such as data corruption, incomplete backups, or hardware failures, and without regular reviews, these issues can go unnoticed until a restore operation is necessary. This lack of oversight could lead to critical data loss, as the remedies provided by the backups would not be reliable, thereby impacting the organization’s operational integrity.

When backups are not properly verified through log reviews, it creates an inherent risk in an organization's data recovery strategy. A backup that is assumed to be usable may turn out to be defective or insufficient in the face of a data loss incident, making regular reviews of backup logs an essential practice for maintaining data integrity and availability.