Final answer:
The directive addressed to 'All ships and Stations' is signed by the Secretary of the Navy.
Step-by-step explanation:
The directive addressed to 'All ships and Stations' is signed by the Secretary of the Navy. According to the Constitution, the President is the Commander in Chief of the Army and Navy of the United States, but the Secretary of the Navy is responsible for issuing directives specifically directed to the Navy. Therefore, option 3) The Secretary of the Navy is the correct answer.