Ranking question with exclusive option

Hello everybody. I'm trying to create a ranking question with an additional answer option "all these things are equally important to me".

I would like this option to be a check-mark (select question type) and exclusive to the other options (so if you select it you can't rank any of the other options and vice-versa).

I tried searching the forum and found some similar threads, but they're all at least 6 years old so I figured the solutions/code recommended back then might not be optimal anymore. Does anybody have any suggestions for how to go about this? Thank you very much in advance for your help.

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