Drag & drop (or card sort) question allows a respondent to select and match elements with defined groups (buckets or baskets).
To add this question to your survey :
Reusable answers - allows respondent to use the same answer choice more than once and add it to more than one bucket.
Max number of answers per question - allows you to set a maximum number of answer choices each respondent can select for the question.
Max number of answers per bucket - allows you to set a maximum number of answer choices each respondent can select for each bucket.
NOTE. This question is not supported in email-embedded surveys.
This feature is available in the Professional and Enterprise plan.