To effectively work towards her long-term goal of graduating with a Bachelor of Fine Arts degree within the next four years, Gina should focus on goals that directly contribute to her academic progress. Therefore, the most relevant option among the ones you provided is:
b. Research what courses are required to obtain a Bachelor of Fine Arts, and plan a course schedule that includes those courses.
This goal is a medium-term goal that will help Gina understand the specific requirements she needs to meet in her degree program, allowing her to plan her academic journey accordingly.
Options 'a' and 'c', while beneficial in other ways (building relationships within the program and getting familiarized with the campus), do not directly impact her progress towards graduation.