Question Importer
The question importer can import the following question types:
Question imports may be done using a CSV upload, and templates for each question type may be found on each question type import page. The importer supports HTML formatting. The importers can be viewed by going to https://YourSiteDomain.com/import where YourSiteDomain is the domain of your site. Imported questions are added to the Question Bank where they can be added to a quiz.
Certain special characters, such as <, are reserved in HTML. Because the importer supports HTML, importing these characters as part of a question title or body, may cause display issues if not properly converted.
Unless you are intentionally importing HTML, as a best practice, it is recommended to convert any text that contains non-alphanumeric characters to their HTML entity values. In the example given, a < would appear as < or <.
See also: W3 School HTML Entities
Do not update questions via import after a quiz has been taken.