Which of the following is NOT an NCO rank in the Continental Army?

The distinction in ranks within the Continental Army is significant for understanding the structure and hierarchy that existed during its operation. General Sergeants is not recognized as an NCO rank in the Continental Army, which aligns with the conventions of military hierarchy where ranks like sergeants typically carry specific descriptors that relate to their duties or levels of responsibility.

First Sergeants, Quartermaster Sergeants, and Sergeants Major were established roles that delineated levels of non-commissioned officers within the army. These ranks had specific functions such as overseeing troops, managing supplies, and serving as key leaders among enlisted soldiers. The absence of the rank "General Sergeants" indicates that it does not fit into the historical framework of military ranks during that period, thus making it the correct answer to the question. Understanding the historical context of military organization can help clarify why certain ranks were used and which were not.