The answer which is an example of a theme with a dual nature is D. people who work hard learn values but may not prosper.
The other sentences are pretty linear and expected - a person works hard and is successful in life. D is somewhat different, which is why it has two natures, or a dual nature.
Answer: A. Another person’s response to your writing.
Explanation: Feedback is a comment made by other people to your writing. It tells you what you could improve based on that person’s opinion and how they felt/thought throughout reading. It’s great to receive feedback to better express your writing to other people!
Identify yourself.
Show yourself.
Open up.