What does the O in Navy O-1 and O-2 signify?

The designation "O" in Navy O-1 and O-2 stands for "Officer," indicating the rank of commissioned officers within the Navy's rank structure. The Navy utilizes a tiered ranking system, where "O" designations are specifically reserved for officers, distinguishing them from enlisted ranks and warrant officers. O-1 refers to the rank of Ensign, and O-2 refers to the rank of Lieutenant Junior Grade. Understanding this is crucial for comprehending the hierarchy in the military, as it helps in recognizing the roles and responsibilities associated with various ranks. The other choices do not apply in this context; "Operations," "Organization," and "Outreach" do not represent the classification used for ranking officers in the Navy.