Lizzy
It's not a case of "have to" but every posting moves earlier postings further down the page or onto the next page and out of immediate sight so its helpful if you put all your questions from a quiz in one posting. This means other postings stay on the first page for a little longer.
ps Would also have been nice to thank costacurta for their answer
I haven't been on this site for a long time, the comments about posting wrong upset me. Thank you for your answer. I am removing myself and won't be back.