Final answer:
The Seaman to Admiral (STA-21) program mandates attendance at a university with an Engineering program to facilitate the transition from enlisted sailor to commissioned officer.
Step-by-step explanation:
A sailor selected for the Seaman to Admiral (STA-21) program is required to attend a university offering an Engineering program.
This initiative is part of the United States Navy's commissioning program, which aims to provide enlisted members an opportunity to become commissioned officers. Candidates must pursue a degree in fields relevant to the needs of the Navy, with engineering being among the preferred concentrations.