This article explains how to create a question bank for usage in a dynamic quiz activity. Question banks allow you to create groups of questions that can be randomly included in dynamic quizzes.
Click Content and select Question Banks
Click Create New Bank
Enter a name for the question bank and click Create
Add a Question category by clicking +Category.
Click +Question to add a question(s) to your category
Add your questions to your Question Bank categories. When using question banks in Dynamic Quizzes you will be able to choose how many questions from each category should be presented to the learner.
Click Save + Close