Help please! What is the Dependent Student Verification form?

Hey! I got accepted to UB but I was told to fill this out? http://financialaid.buffalo.edu/pdfs/14-15/1415DependentStudentVerification.pdf

I don’t understand whh because I already did my fafsa. What is the Dependent Student Verification form for? I especially don’t know how to fill out the last page. Why are there XXX in some of the answer places?

Also, what is a signed 2014 income tax return? Do they mean my parents physically sign their tax return with a pen and I send it by mail?

My parents can’t help me with this because of a language barrier between us. We don’t communicate much.