Which box of the CMBRE contains the TAU?

The correct answer indicates that the TAU can be found in Box 1 of the CMBRE (the Career Management Broadening Resource Effort). In the context of the CMBRE, each box contains specific information or resources assigned for various aspects of career management and educational opportunities for service members.

Box 1 is designated for critical tools and resources specifically aimed at the Technical and Administrative Utilization of military personnel, which includes the TAU. The TAU is essential for tracking training and qualifications, thus indicating how it is categorized in Box 1's focus on administrative and technical management of service members' career progressions.

The other boxes serve different purposes or contain different types of resources relevant to career management, which is why they do not include the TAU. For instance, other boxes may focus on advanced leadership training or specialty development that does not directly align with the TAU's specific role in tracking administrative training.