The reason why U.S. farmers destroyed their potatoes, according to the article, is B. Much of their potato crop was affected by a plant disease called “blight.”
Potato blight is a potato disease that occurs in humid regions, where temperatures range between 4 and 29 °C (40 and 80 °F). It also affects tomatoes. Potato blight is caused by the water mold known as Phytophthora infestans.
Thus, the destruction of the potatoes was not due to people ordering only small fries, flooding at the Port of Vancouver, or the stay-at-home orders.
Learn more about Potato Blight at https://brainly.com/question/3106027