The 3rd one is your correct answer. :3
Answer:
The answer to Part A would be Ignorant, as the author goes on to state that his youthful understanding had struggled in vain. If someone is ignorant of something, yet they do not take the time to actually go research or learn about that thing, then they would be struggling in vain because they are selfish and not taking time to research what it is that the other person is saying that they do not understand.
For the answer to Part B, I would say that (Frederick) Douglass' new awareness of how owners maintain control over slaves allows him to better understand how to improve his situation. I say this because he seems to have an awakening/epiphany in the very last line: "I now understood what had been to me a most perplexing difficulty".
Explanation:
I hope this helps!
Answer: A
Explanation:
The evolution of dogs is a scientific topic that has a lot of scientific research backing it up. So, the most reliable source would be one that is revised by people well versed in this area of knowledge. An academic paper revised by peers is an official, trustworthy source.
They are related to one another because they are both moving in sone way or capable to move in some way.