Final answer:
The correct option is (a). The silverskin should be trimmed from a pork tenderloin before cooking to prevent the meat from being tough to chew.
Step-by-step explanation:
When preparing a pork tenderloin before cooking, it is essential to trim the silverskin. The silverskin is a thin, silvery membrane found on the surface of the tenderloin. It does not dissolve during cooking and can become tough to chew, which is why it's recommended to remove it.
While there may be some backfat on the tenderloin, this fat can often be left on to help keep the meat moist during cooking. The chine bone and other connective tissue are usually not present in pork tenderloin, as it is a specific cut known for its tenderness.