Apologies if some items seem alarming, we hope to capture a realistic perspective of the way these concepts are related, so if you feel this item is strange/inconsistent I urge you to disagree with it
How can you capture a realistic perspective of anything when you clearly don't understand the questions you are asking? You have referred to legal terms incorrectly, you expect people to contextualise "people's reactions" for themselves without explaining what you mean or giving examples and your questions betray an incredibly poor understanding of the Equality Act and women's existing sex-based protections.
I realise the purpose of the survey isn't actually to understand women's experiences, but do you realise how offensive your questions are to women and how inappropriate it is to post this on Mumsnet's feminist board?
Your questions strawman a number of transphobic statements and generalisations that place a great deal of undue pressure on the survey subject to fill in the gaps caused by your (possibly intentional?) vagueness, meaning that the answers you receive will be of no use to you anyway, as your questions are too broad and vague for you to understand with any confidence what the answers you receive actually mean. The fact you think these sound like feminist views (as evidenced by the fact you posted on these boards and thought it might be a good place to get women's views) is incredibly insulting and shows a deep lack of understanding of feminism.
Your survey trivialises the very real issues that women are facing in society and to reduce this to questions around "women feeling threatened by transwomen" and all those stereotypical statements that transphobes might agree with shows that you really have no idea what the issues actually are for women.
If you feel that biology being important to women is some crazy conspiracy and that we're all just enamoured by groupthink, then enjoy your thesis, I'm sure it will be groundbreaking. Meanwhile, in the real world, some women have actual sex-based problems to address.
Stop derailing women's threads and undermining women's efforts to organise and discuss the issues that affect them, and look elsewhere for your research subjects. Women have been used enough.