Need help with the quiz problem.

I want to set time limit for each question in quiz module (say 30 seconds) and after that time, the
form will auto submit the question (auto submit = no option selected = unanswered).

There are 3 questions, so total time limit is 90 sec (30 sec each).

I'm doing this via XAMPP.

I've attached the file that include the work so far

or check the link