Kev lees txais yuav tsum tau ua raws li cov khoom tshwj xeeb, cov qauv lossis cov qauv tshuaj ntsuam xyuas tau lees paub los ntawm ob tog, Tus neeg thov yuav tsum lees txais cov khoom hauv 5 hnub tom qab tau txais cov khoom. Yog tias cov khoom dhau qhov kev lees paub, Demander yuav tsum muab daim ntawv lees paub rau tus neeg muag khoom. Yog tias cov khoom tsis raug lees txais nyob rau lub sijhawm txwv lossis tsis muaj ntawv sau tawm tsis pom zoo, Tus Neeg Thov yuav tsum raug lees paub tias tau dhau qhov kev lees paub.