You don't have anything on the form relating to research ethics or confidentiality - as a lecturer, I'm astonished your university has given your format and questions ethical approval.
That aside, you don't, as a PP has said, have an option for people with parents who differ - it's perfectly common to have one parent with weight issues and one not. Acknowledging this would allow you not to make over-assumptions related to whether people who grew up with obese parents are more likely to be obese themselves. It's a perfectly logical assumption, of course, but not one you could draw accurately from this set of questions.
The one about takeaways is also problematic - there's a gulf of difference between 1-2 per week and never I appreciate if you're an undergrad, your deadline is likely to be looming - but these are significant issues with your questionnaire design, that have implications for both the results you'll get and the conclusions you draw from them.
You also only have options for being overweight or obese, not normal or underweight: you need these for control.
I'm not trying to piss on your chips completely - and I've filled in the survey as best as I could in light of the issues above. But I strongly recommend talking to your supervisor about this- it's not a neutral set of questions, and that alone would ensure it wasn't given ethical approval in many universities, but the main issue for you is that this makes it more likely you'll have skewed data, and thus, faulty conclusions.
Hi hefzi Thank you for your comments, yes i have ethical approval but as youve highlighted i have added that it is confidential on paper copies but need to add it on here as well so thank you for pointing that out.
It is not aimed at people of a healthy weight or underweight and that is why there is not an option for them. The questionnaire is only for people who are overweight or obese so i dont want other people answering it else my data wont be valid. If you have filled it in i hope you fall into 1 or those 2 catogories.
I will show him my list of questions again and take on board what you have said however he has already given me ethical approval.