Universal Serial Bus standards for connecting peripherals to computers.

• A. Wireless
• B. NFC
• C. USB (A/B/C)
• D. 802.11X

Answer: (C)

USB standards define a universal, wired interface for connecting peripherals to computers. It was designed to be the common bridge between a host computer and a wide range of devices—keyboards, mice, printers, external storage, cameras, and more. USB provides both data transfer and power through the same connector, enabling hot-swapping (plugging and unplugging without rebooting) and plug-and-play discovery. Over time it has grown to include multiple connector types (classic Type-A, device-oriented Type-B, and the versatile Type-C) and higher transfer speeds, while remaining backward compatible.

In contrast, wireless options are used when you don’t want a physical cable, but they’re separate interfaces (for example, wireless connections like Bluetooth or Wi‑Fi) and not the standard wired method for attaching peripherals to a computer. NFC is for very short-range data exchange or pairing, not a general-purpose peripheral connection standard. 802.11X is related to Wi‑Fi security, not a physical peripheral interface. So the universal, widely adopted wired interface for connecting peripherals is USB.