It is possible to make a question mandatory in a survey from the EX Module.
Steps to follow:
In the left-hand menu, click on Surveys > Punctuals.
Select the survey you want to edit.
Go to the question you wish to make mandatory.
Check the Required box at the end of the question.
This way, respondents will be required to answer the question before they can submit the survey.
Feel free to write us via the chat if you have any questions.