Overview

If you want to define a default response to a question, use the "Default Data Value" field in the logic section of a question. You can set the default value for a question to be a case property. This will also even work for multi-select questions, if the  value loaded into the multi-select question is a string of the Question ID's of the default responses desired separated by spaces.

This functionality could be useful, for example, if you want to have an Update Registration or Modify Registration form that defaults the response to a given question entered at registration. So, say you have a registration form with a Multi-Select question to find out the occupation of a woman and during registration you check-marked three of the choices: farmer, seamstress, and hairdresser. The response to this question could be saved in the case property as something like 'farmer seamstress hairdresser'. If you default the question to that case property, 'farmer' 'seamstress' and 'hairdresser' will show up pre-checked.