Here’s a simple example: https://perchance.org/drop-down-list-example#edit

(For future reference, there are actually a lot of example generators built and so if you type “drop down selector to choose list perchance” into google, the above link is the first result :) Also, if you wouldn’t mind, please edit your post’s title to be a summary of your question - that way it’s more easily findable via Google, which helps others who happen to type their question in a similar way that you summarized it, and so reduces the need for people on this forum to answer lots of duplicate questions. Thanks!)

Also, as a bonus: Here’s an example where multiple drop-downs are used to select a list + sub-list/item: https://perchance.org/multiple-drop-down-lists-example#edit