Final answer:
Chris should focus his efforts in Step 3: Modify and maintain account of the organization's account life cycle.
Step-by-step explanation:
Chris should focus his efforts in Step 3: Modify and maintain account of the organization's account life cycle.
During this step, it is important to regularly review and update user accounts to ensure that employees have the appropriate access rights and roles based on their current positions.
In Chris's case, he should investigate why employees are retaining access to files after they change positions and implement measures to revoke or modify their access accordingly.