Final answer:
The allegoric symbol for the naval officer is the anchor, expressing stability and a secure foundation akin to the officer's role.
Step-by-step explanation:
The allegoric symbol for the naval officer is commonly the anchor. In literature and art, the anchor is a symbol of stability and a secure foundation, reflecting the naval officer's role in providing safety and security at sea. Symbols like the ship, sword, and flag also have their own associations. The ship represents the journey or voyage, the sword can symbolize martial prowess or command, and the flag represents nationality or allegiance. However, in the context of allegoric symbolism, the anchor's association with steadiness and dependability makes it an apt representation for a naval officer.