The correct answer is C. Rib.
Explanation
The rack from which lamb chops are taken is a part of the lamb's body located in the upper part of the ribs and that is used for human consumption. This cut is very popular worldwide and includes eight ribs that are cut individually to obtain chops, each chop includes a tender section of meat and a section of bone from the ribs. Additionally, lamb chops can be prepared using different cooking methods. According to this, if Gary wants to prepare appetizing lamb chops for his wife, he must select the cut of the ribs because it is this cut he can use to make lamb chops by cutting each rib or section individually. So, the correct answer is C. Rib.