Good job! I would recommend you tweek the first sentence, because its a run on sentence. Try divided up the sentence. Also, add a concluding sentence.
By the end of the book his goal is to turn the story of what happened to him and Johnny into a book to let other people know about the experience they went through and to let the world know that even greasers have dreams another of pony boys goals is to remain with his brother soda pop and Darry.
What do you mean by 'in this unit'? If we're talking about scientists in general it would be A. curious. Not all scientists are talkative, pessimistic, or wealthy. So, that leaves curious. Because, why would you decide to be a scientist if you're not curious about the world and science?
