A. The pursuit of individual happiness and the value of creativity.
Explanation:
As given in the question, the proposed story poses a conflict between what the protagonist wants and what she needs. Being a musician is a low-income work that will make her life hard but at the same time, doing a job means sacrificing her musical career.
The two conflicting interests in her life where she either choose a life of happiness by pursuing her musical interests or doing a job that can give her a comfortable life but without her music give her a dilemma. And in plotting a story, the themes will most likely focus on the pursuit of individual happiness and the value of creativity.
