'Device drivers' is the correct answer. Device drivers are the software components within the operating system that provide the interface between the hardware and applications, allowing them to communicate. If the remote clicker is not functioning, it is likely because the driver that interprets the clicker's input is not working correctly. 'Services' generally refer to background processes that run on the computer, not to direct hardware interactions. 'File systems' manage how data is stored and retrieved, not how devices are controlled. 'Application management' oversees the operation of applications, but does not directly handle communication with input devices like a remote clicker.