Leilani purchases a donut from the nearby bakery and expected the donut to be defect free and soft and edible.
After the first bite, Leilani breaks her tooth due to a metal piece which was there inside the donut. She then had to visit a dentist to get her broken tooth fix.
Thus the warranty of merchantability is implied which means that the commodity is complied with the standards of the customers expectations.
Thus the answer is implied warranty of merchantability.
The behavioral pattern would need some evaluation in order to get additional information about the subject matter. After the hypothesis have been proven and looked into over and over again then a theory can be formed.