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

What task did the challenge request?
Which completion condition was unclear?
What example was missing?

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