Which sentence connects an element of a story to a theme

The main characters change from being overly critical to compassionate, helps the readers understand that empathy is needed to understand others
The story takes place during the early 1900s and helps readers understand how women were treated differently during that time
The symbol of the butterfly helps readers understand the importance of change in persons life.
The conflict between the main character and her mother help readers understand typical relationships between parents and children

The main characters change from being overly critical to compassionate, helps the readers understand that empathy is needed to understand others