TO FORGIVE HIM OF HIS WORDS
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.
State how computers have brought us apart while bringing us closer together. Talk how computers affect how we communicate with eachother, and the goods we use :)