Answer:
The central idea is the central, unifying element of the story, which ties together all of the other elements of fiction used by the author to tell the story.
Explanation:
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?
Dear and deer are examples of homonyms.
