The Carell formula means that we are in a position where we can concentrate on solving problems only if we force ourselves to face the worst-case scenario and accept it mentally.
According to the above definition, the option 'A businessman owed a large amount of debt due to poor management. He came to his relatives' farm disheartened and wanted to spend the rest of his life here. However, with the encouragement of melon farmers, he finally rose again' belongs to the Carell formula.