Read this paragraph.

Sophie believed that she deserved a raise. She had been earning the same wage for two years, and her work responsibilities had greatly increased. She was often asked to train new waitstaff, and she knew her employer valued her expertise. When her employer arrived at work, Sophie started the conversation.

What theme is introduced through Sophie's actions?

A) Sophie has become a responsible employee.

B) It is important to train new employees.

C) People in positions of power should treat others kindly.

D) People must assert themselves to get what they want.