The answer that you are looking for should be a frame story.
they might become dry and lifeless
explanation: Because if you postpone your dreams and you don't work to acheive them as soon as you think of them, then they will become lifeless, because you aren't making them a reality.
slowly feeling my arms and legs swiftly swimming through the swimming lane
Answer:
b. it is weak because it does not provide details about Harriet Tubman's life.
Explanation:
I think that's pretty self explanatory.