We have a large number of possible responses to a question, which is too long to show as a checkbox/radio button question. Is it possible to use a search/lookup function to make suggestions as respondents start typing, and thus capture responses using a predefined list of options?
Yes – this is possible. See the SurveyGizmo documentation for details on using the Auto Complete Function:
Just to add to Jim’s links above – you need to decide if you want to only allow choices from you list or allow free form text if the selected choice is not included.
Also, if helpful you can also link any question to another source, like a spreadsheet or document with additional information that might be helpful. For example a glossary.