Answer:
D. While volunteering at Libby Prison, Van Lew made important
contacts with Union officials.
Step-by-step explanation:
During the Civil War, Elizabeth Van Lew volunteered at Libby Prison, where Union soldiers were being held captive. Through her work there, she made contacts with Union officials, including General Ulysses S. Grant, whom she provided with information about the conditions of the prison and the treatment of the prisoners. This allowed her to help arrange the escape of many Union soldiers, including returning them to Union lines. Van Lew's contacts and information gathering activities made her a valuable asset to the Union Army, and she was eventually appointed as a spy by General Grant.