What is the minimum time required for an E-1 to advance to E-2?

The correct answer is based on the advancement policies in the military, specifically for sailors in the rate of E-1. To advance from E-1 to E-2, a sailor is required to complete a minimum of 9 months of time in service. This time frame ensures that the service member has sufficient experience and has demonstrated the necessary performance and potential for increased responsibility.

Advancement policies are designed to maintain standards within the ranks, so the minimum time for promotion reflects a balance of time served and the ability to meet the expectations of the new rank. This 9-month period allows sailors to learn their duties, gain skills, and exemplify the core values of the Navy, which are crucial for successful advancements in rank.