Either your college student doesn't actually qualify as YOUR dependent or you've answered something wrong in the interview.
Two possibilities immediately come to mind based on the wording of your question. The student is not your child and may not meet the relationship test. You are the non custodial parent and are not entitled to claim the student.
See full dependent rules at: https://turbotax.intuit.com/tax-tools/tax-tips/Family/Rules-for-Claiming-a-Dependent-on-Your-Tax-Ret...
For more specific help, reply back with how you answered each question in the interview.
