Final answer:
The Center for Devices and Radiological Health (CDRH) is the branch of the FDA responsible for the regulation and safety of medical devices.
Step-by-step explanation:
The branch of the FDA responsible for the premarket approval of all medical devices and overseeing their manufacturing, performance, and safety is the Center for Devices and Radiological Health (CDRH). The CDRH regulates a wide range of devices, from simple toothbrushes to complex devices like implantable brain pacemakers. They also oversee the safety performance of non-medical devices that emit certain types of electromagnetic radiation, such as cellular phones and microwave ovens.