If nothing was unclear or difficult, say so. Skip questions about steps you did not experience; use not applicable where appropriate.

Which bin category was unclear?
What item example was missing?
What sign helped you decide?

Author notes / illustrative keys where applicable:
1. Read for category meaning. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.
2. Read for example gap. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.
3. Read for useful sign. Keep the specific explanation in the respondent’s own words rather than converting it into an unexplained overall satisfaction score.