I am a new learner.

I have created 10 questions.
First one is "Have you ever travel abroad?" yes/no question.
If yes, all the remaining will be display by yes condition.
So, after the user choose the answers 2-10, he changed his mind not to answer.
Then he click on Q1 No.
But all answers are not reset and still there. (I can check by going back to yes).
How can i reset all the answers of 9 questions?

Thank you

You can't automatically reset the answers when the questions are hidden by conditions/relevance but if the questions remain hidden by conditions (are irrelevant) when the page is submitted, the answers be stored as null.