Which sentence connects an element of a story to a theme?

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

The main characters change from being overt critical to compassionate helps readers understand that empathy is needed to understand others.