MN1 Online application, need help

Hi
I'm applying for registration of my 9 month old daughter, she born in UK. I granted ILR 2 weeks ago, I never applied her parent Country passport or ID, so she don't have any ID or travel documents. When I fill online application their is nationality option, without entering nationality I can't move further,. Which nationality I need to enter?
Please guide.
Thanks

She is Pakistani, same as parents (if that is what your nationality is). There is no requirement for a passport for UK born children to register as British.