Answer:
Defamation
Explanation:
A tort is a wrongful act which leads to a legal liability against the party doing it. It is an infringement of right or misguiding people by spreading false statements against someone.
Here in this example A taco company losing its business to a new restaurant started making oral statements regarding the poor quality of the tacos offered by the new restaurant.
The taco company completely lied and will be liable legally for this tort because it do not have any legal prove for its oral statements to support itself. Its an example of defamation because the taco company tried to defame that is to spoil the image or goodwill of the new restaurant through spreading rumors against the food quality of the new restaurant.