| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | optional | East Asia | In East Asian culture, it is considered polite and hygienic to take a bath before visiting an onsen, but it is not mandatory. | 2 |
| 2 | optional | East Asian countries | In East Asian countries, taking off shoes before entering a house is a sign of respect and not optional. | 1 |
| 3 | optional | Traditional societies | In traditional societies, following the career path set by parents or elders is expected and not optional. | 1 |