What is the maximum number of months a sailor may extend their enlistment?

The correct answer is based on Navy policies that allow sailors to extend their enlistment for a maximum of 48 months. This extension is available to ensure operational readiness and flexibility, allowing the Navy to retain personnel when needed due to various factors such as global deployments or to fill critical roles. The policy reflects the Navy's commitment to maintaining a balance between personnel levels and mission requirements.

In contrast, other options exceed the allowed maximum, which would not comply with Navy regulations regarding enlistment extensions. The structure and regulations surrounding enlistment extensions help to maintain a well-managed force while providing sailors with the opportunity to extend their service if they choose.