Answer:
Out of all these answers the best answer would be D. A book by someone who knew Tubman personally.
Explanation:
A dramatized version of her life could not be the answer because of the liberties involved in a show. The 1960s were a time of segregation so most opinions at the time would likely to be negative for Tubman. Blogs are known to be unreliable uses of information. I would choose the book by someone who knew Tubman personally.