Answer:
She has been ordered to act as a detective, uncovering Confederate spies operating in Union territory.
Explanation:
Emma Edmonds was a Union Spy during th war. She changed her name later from Sarah Emma Edmonson to Franklin Thompson, and began selling the bible under the same name. After this, she joined the Union Army and served as a spy, nurse, mail carrier, soldier, etc.
In 1862, she was transferred to Kentucky on an assignment to spy Confederate spies working in Union. For this mission, she disguised herself as a <em>young Southern gentleman seeking employment. She changed her name, for this assignment, to Charles Mayberry. </em>
So, from the given options, the correct one is the third option. She posed as a visitor seeking for job because she was assigned to spy and uncover Confederate spies working in Union.