Which document is required to fill out the FAFSA?

The correct answer involves individual tax returns because these documents provide essential financial information required to assess a student's eligibility for federal financial aid. When completing the Free Application for Federal Student Aid (FAFSA), applicants must report their income and tax information from the previous year. This helps to determine the Expected Family Contribution (EFC), which is a key factor in calculating the amount of financial aid a student may receive.

While bank statements, medical records, and high school transcripts can be helpful for various aspects of financial planning and education, they are not specifically required for filling out the FAFSA. Bank statements, for instance, may provide additional context regarding a family's financial situation, but the FAFSA itself primarily relies on tax returns to provide an accurate and standardized assessment of financial need.