Show the question when only choose one option

Hello all, i am new to kobo and i need help.
I have 1 choice list with a lot of options. and i want to add another question which will not appear until the user choose from the list and if he didn’t choose the question remain hide. how can i do it?

if you want to filter the Q2, only showing it when at least one choice was selected in Q1, you can use count-selected(${Q1}) > 0 as relevant (column) in Q2.
Kind regards