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You can achieve what you are looking for by using Conditional Logics, in this case you can control which dropdown menu to SHOW/HIDE depending on an option previously selected in a an other dropdown menu.
Check this example made with colours:
Main dropdown menu options: Red, Green, Blue
Red dropdown menu options: Lightred, Strong Red
Green dropdown menu options: Lightgreen, Strong Green
Blue dropdown menu options: Lightblue, Strong Blue
Feel free to clone it in order to make further investigations,
Hope ythis helps.
Please let us know if you need further assistance.