I have an array question where for some subquestions I would like to have the answer option "Not applicable", but I don't want this answer to be available for all subquestions.
I use LimeSurvey version 3.19.2
I already tried to add the following in the custom.css (adapted from the code to remove a textbox from a multiple questions with comments), but it is not working.
Hiding the radio input will still allow it to be selected via the keyboard. You would be better off removing it with JavaScript (and you will also want to remove the associated label).