Which cut of beef is known as Short Rib?

The Short Rib is a specific cut of beef that comes from the rib area of the animal, particularly from the lower portion of the rib cage just beneath the ribs. This cut is known for its rich flavor and tenderness, which results from the marbling of fat throughout the meat. When slow-cooked, Short Ribs become incredibly succulent and are often used in various dishes ranging from barbecued meals to braised recipes.

In terms of the other cuts listed, while brisket comes from the breast area, chuck comes from the shoulder, and flank comes from the abdomen, none of these options are associated with the rib section of the cow from which Short Ribs are derived. This is what makes the choice of "Rib" the correct answer.