The first one. They are two separate sentences.
"Breaking with tradition" is a major theme of modernist literature. Therefore, the correct answer is the second one -- it emphasizes the changing values of the time.
In this case, the changing values involve women's appearance. For centuries, women had long hair. A woman with very short hair was never seen. In the story, though, short hair is becoming the fashion.
The correct sentence is, "After taking the test, I felt bad". The other two sentence had an incomplete structure as it only ended with an adverb.
