21. The passage indicates that to try to overcome the problem Tubman's illiteracy poses for a biographer, Humez:
Your Answer is
Correct Answer is B
Explanation
Stem Question: How does biographer Humes address Tubman's inability to read and write?
Item B: Locate L37-39 according to the question stem. In order to solve the problem, Humez referred to more materials that Tubman had not used before.