All convincing speakers must perfect the art of persuasion.
Someone who has perfected the art of persuasion would be highly skilled at convincing people of different things.
Answer:
2) To present an interpretation.
The author of the passage is providing an interpretation of the book in this sentence. He is arguing that the novel is affirmative and hopeful, and that it stresses the power of humans to reach for greatness and inspire others. This is never explicitly stated in the novel. Therefore, the argument is based on his subjective views and analysis.
4) He also suffers a painful loss.
This revision is the best one for sentence 4. It gives the reader the same idea as the other options. However, it is written more clearly and in an active voice.
a. Helen is frustrated by the challenges associated with learning to communicate.
B aptitude because that would be the most of a persons personality