single to be in apprenticeship?

I am not sure, but some of the questions bugged me. I applied for a lot of job, and this one ” Cloud Apprenticeship” ask about household income, be single or to live with someone, even ask for birthday. Is this weird? https://preview.redd.it/hl1ij2f3adp81.png?width=826&format=png&auto=webp&s=b4fedbd10bcec02b79bfe60af02f56c1c3af0d87