The correct answer is 'B. The programme which is the permanent part of the computer' because an embedded system is a computer system designed to perform specific tasks within a larger system. The program in an embedded system is typically stored in read-only memory (ROM) and is permanently integrated into the hardware of the device, distinguishing it from general-purpose computers where programs can be easily changed or updated. This permanence allows embedded systems to efficiently and reliably perform their intended functions without the need for frequent software updates or modifications.