We have here more than 15 questions,   and the more questions we have, the more  difficult it'll be to navigate through them. Collapsing elements can help to focus on one  part of the quiz, so, you can collapse Parts. Same for questions, where we can collapse  questions at each part one by one. Same for the questions of part two and part three. Now, it's easier to have a narrowed  vision over each section of the quiz.

Collapse Elements

Queezed - Make & generate unique quizzes into PDF | Product Hunt