Final answer:
All additions, deletions, or changes to the Navy Regulations are ultimately approved by the Secretary of the Navy.
Step-by-step explanation:
According to the laws and regulations governing the United States Navy, all additions, deletions, or changes to the Navy Regulations are ultimately approved by the Secretary of the Navy. The President of the United States acts as the Commander in Chief of the Armed Forces, which includes the Navy, and has the power to direct the military's broader strategic and operational goals. However, the day-to-day administrative and operational details, such as regulations governing the conduct of Navy personnel, typically fall under the purview of the Department of the Navy, which is headed by the Secretary of the Navy. The Secretary is responsible for implementing higher-level directives from the President or the Secretary of Defense, but has the authority to approve specific changes to regulations that govern the Navy itself.