I think this is a continue the passage thing so, sorry if I’m wrong “ there’s somebody walking behind us. I think we are being followed “
The proposition here is - in. <span>A </span>preposition<span> is a word such as after, in, to, on, and with. </span>Prepositions<span> are usually used in front of nouns or pronouns and they show the relationship between the noun or pronoun and other words in a sentence.</span>
Answer: The answer is below.
Comparing:
Both of the themes from these excerpts are about how you can be able to learn despite differences in yourself from others.
Contrasting:
The theme of <em>The Story of My Life</em> by Helen Keller is that you are able to do anything you put your mind to, even if you are physically impaired in some way.
The main theme in the excerpt of <em>The Narrative of the Life of Frederick Douglass</em>, is that you can learn how to do things even if you are of a different ethnic background.
In other words, the main character in the story are different in different ways (one is blind, the other was of a different ethnicity)
The importance of using a variety of sentence structures is to change up your writing. To make the reader engaged in what you have to say. If your sentence structure is weak and does not vary the reader might get bored. It also better shows your topic.
hope this helps! have a good day!