You said there were special circumstances to not filling out the parent part. What are they?
If your parents are incarcerated, you have left the house due to abuse, you don't know where your parents are and you cannot contact them even though you are not adopted, or if you are between 21 and 24 and not living with family but homeless or at risk of homelessness, those are the special circumstances.
Wow, those sound rough, but none of those apply to me. Thank you for helping me, I think I can fill out my form now!