Regularly engaging with this kind of puzzle is presented as a way to expand mental flexibility and build habits of careful observation that can apply to everyday situations requiring close analysis.
The answer to the riddle is contained in the source’s reveal image, which identifies one of the three characters — A, B, or C — as the one whose cuffs are loose enough to escape. Whether you solved it or not, the next step is straightforward: go back, compare the three options again, and see whether the detail you focused on was the right one.
