I thinks it’s A cause stock character is in literature and theater or film of a type quickly recognized and accepted by the reader or viewer and requiring no development by the writer
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.
The correct answer is "changing."
For a long time, women were expected to be very feminine. To this end, long skirts and long hair were the norm. In the 1920s, however, things began to change. Women began to become more independent, wear shorter skirts, and cut their hair.