The correct answer is B) because many people opposed her work.
The other options of the question were A) because she fled to South Carolina. C) because she nursed abandoned enslaved persons. D) because she worked with Susan B. Anthony.
A reward was offered for Tubman’s capture because many people opposed her work.
Harriet's work represented a problem for many people. As appears in the text: "Harriet’s fame also made her a target, and a large reward was offered for her capture and return to Maryland." Her work had been supported by famous Americans such as writers Ralph Waldo Emerson and Louisa May Alcott who helped her, as well as activist Susan B. Anthony.
Harriet Tubman (1820-1913) was a former African American slave who became a leading voice in the abolitionist movement and also helped many black slaves to escape from the southern plantations using the support system called the underground railroad.