What does USB stand for in relation to computer connectivity?

The correct answer is "Universal Serial Bus." This is a widely used standard for both data transfer and power supply between computers and other devices. The design of USB allows for easy connection and disconnection of various devices, such as printers, external storage, and peripherals, without the need for restarting the computer.

The term "Universal" indicates that it is intended to be a standard interface used across various types of devices, promoting compatibility and ease of use. "Serial" denotes the method by which data is transmitted—sequentially one bit at a time, which is standard for USB communications. Finally, "Bus" refers to the system in which data is transmitted and shared among multiple devices through a common path.

Understanding the functionality and purpose of USB is important to grasp how modern computer systems integrate and communicate with a multitude of devices efficiently. The other options do not accurately represent the established universal standard for data connectivity and power supply used in computing.