I would like for respondents to be able to select more than one radio button. How is this done?
Radio button type questions will only accept a single response. They are typically used for YES/NO or TRUE/FALSE type questions where you want to restrict the respondent to selecting a single response.
The Checkbox-type question will accept multiple responses. It is typically used in questions where you want the respondent to select all options that apply.
You can review the question-type documentation for details.