Gender is literally none of the seven. None of them even come close to being acceptable inputs.
Sex is defined by body parts. Sex is defined by chromosomes.

Gender is a dynamic social construct of expectations related to an individual's specific sex.
Gender is, succinctly, "expectations people have of you strictly because of your sex regardless of your personality or what you identify as". That means you're expected to not wear bras if you're a male or piss while standing if you're a female.
If you're a woman and only 70% of the things you do are feminine rather than the expected 90-100%, all it says is you're a slightly masculine female, nothing more.

When generic forms ask for your "gender" rather than your "sex", it's because the forms are wrong.

"Relating to yourself" is also perhaps the stupidest most nonsensical string of words ever uttered, inherently not being able to mean anything or even imply anything whatsoever, resulting in the literal impossibility to even come remotely close to expressing any information at all.