Answer:
She escaped at night
Explanation:
The evidence in the text that explains how Tubman was able to keep her identity hidden from the slave owner is that "She escaped at night."
The is evident from the book written by Ann Lane Petry titled "Harriet Tubman: Conductor on the Underground Railroad"
The journey of her escape from Poplar Neck Plantation which began on September 17, 1849, started on Monday night, to avoid being seen by slave catchers. She eventually escaped to Philadelphia, a free state in the North of the United States.
