Please trust that my code is fitting your project much better than your code.
The general rule of thumb is that if you need to repeat something more than 2 times, then you are doing it wrong.
Making 20 layouts for 20 quiz questions is wrong. Making 20 identical Player sprites and 100 checkbox objects for those layouts is wrong. Having 500 events and 1000 actions just to check the correct answers is terribly wrong.
Don't copy-paste your broken code, don't discard words of advice that you don't understand. Try to learn new things (functions, families, arrays etc.) and you will see how easy it is in fact to make good working apps in Construct.