Influence of Personal Passion on Academic Perseverance

Sarah is a graduate student who has always been passionate about environmental science. Throughout her academic journey, she has faced several challenges, including financial difficulties and a demanding course load. Despite these obstacles, Sarah has maintained her motivation by focusing on her long-term career goals and the impact her work could have on the environment. To support her studies, she often engages in volunteer work related to sustainability and conservation. These experiences not only help her networking but also reinforce her commitment to her field.

In light of Sarah's motivation and identity development, which of the following factors is likely to have the most significant influence on her continued perseverance in a challenging academic environment?