Which of the following ranks is classified as an officer rank?

The classification of officer ranks in the Navy includes positions that have leadership responsibilities, authority, and typically require a commission. The rank of Lieutenant is indeed an officer rank, as it represents a commissioned officer position within the chain of command. Officers at this level often hold significant responsibilities and are expected to manage personnel, equipment, and operations within their units.

In contrast, the other ranks listed are classified as enlisted ranks. Chief Warrant Officer, while a senior position, is a warrant officer rank but does not fit the traditional commissioned officer rank class. Senior Chief Petty Officer and Master Chief Petty Officer are both high enlisted ranks, focused on technical skills, leadership at the enlisted level, and operational effectiveness but do not constitute a commissioned officer's status. Therefore, the distinction of Lieutenant as a commissioned officer clearly identifies it as the correct answer in this context.