Which of the following could replace 'administratively' as used in the passage?

Directions: Read the following passage carefully and select the most suitable option according to the corresponding number in the passage.

The US Navy is responsible for conducting naval operations not only in U.S.A., but all around the world. The Navy is administratively managed by the Department of the Navy which is headed by Secretary of the Navy.
The United States has nearly 500,000 naval personnel, a quarter of who are in ready reserve. Of those on active duty, more than eighty percent are enlisted sailors, while commissioned officers make up around fifteen percent of this force.
By completing the Personnel Qualification, sailors prove that they have mastered skills and are ready to take up responsibilities. Their qualifications are denoted on their uniform with badges and insignia .
Their insignia on shoulders and sleeves of the uniform indicate their field of expertise. Working uniforms are comfortable and prioritize safety.