Multiple choice buttons shows the options as buttons instead of checkboxes. Participants click every button that applies, and the selected buttons turn to the color of your theme. Large buttons are easy to tap on phones and work well for topics, interests or tags.
Click the purple + in the top bar. The question type picker opens.
Under Multiple choice, click Multiple choice buttons. The question appears at the end of the current question group.
Click Your question here and type your question.
Click the first subquestion and type the option. Add subquestion below the last row adds another one. Keep the labels short: they have to fit on a button.
Select the question to open its settings on the right.
Exactly as for Multiple choice: every option is stored on its own, for example Q011_SQ001, with Y when it was selected. Multiple choice buttons is a question theme of Multiple choice: only the look differs.
They click the button again. It turns back to its normal look.
Yes, as long as the survey is not active. Select the question and pick Multiple choice buttons under Type in the question settings. Both types use subquestions, so the options stay.