Route like question/{question} should do the work. Question/1, question/2, question/3 etc...
Simple way: in QuestionController@show method, pass a variable time to the view with a now() method, store it in your view with a hidden field - or directly in your view, use now() method to fill the hidden field's value -. And in your QuestionController@store (when reply is sent), verify the value of the field.
Less simple way: the same with session, so the visitor can't modify the html.
per questionnaire that's being taken, store in the database the last answered question in a database or session as @romainb has mentioned
you could store on the database when the question was answered as a DateTime field and then use javascript to do a countdown and then redirect or furthermore you can use something like pusher for broadcasting https://laravel.com/docs/5.8/broadcasting
