Final answer:
The correct answer is USB. It is an external peripheral interface standard for communication between a computer and external peripherals over a cable using bi-serial transmission.
Step-by-step explanation:
The correct answer is a) USB.
USB stands for Universal Serial Bus. It is an external peripheral interface standard that allows communication between a computer and external peripherals over a cable using bi-serial transmission.
For example, USB can be used to connect devices such as keyboards, mice, printers, and external hard drives to a computer.