How many attached gold bars are worn by an O-5 in NJROTC?

An O-5 rank in the NJROTC is equivalent to a commander in the Navy, and they are authorized to wear a specific number of gold bars on their uniform. In this case, an O-5 wears five gold bars. The bars represent the rank and authority of the officer within the NJROTC structure. This practice is consistent with the visual indications of rank, allowing for a clear and quick identification of the individual's position and level of responsibility. This understanding of the uniform insignia is important for maintaining order and hierarchy within the cadet structure.

The other choices do not correctly represent the number of bars associated with the O-5 rank. The importance of knowing these insignia is crucial not only for the cadets’ recognition of ranks but also for their own progression and understanding of military customs and courtesies.