What describes a set of standards for connecting computers in a network?

The correct answer is a network protocol, which refers to a set of standards and rules that determine how data is transmitted and received over a network. Network protocols manage communication between devices, ensuring that data can be sent, received, and interpreted correctly across different machines and technologies.

In the context of the choices provided, Ethernet, Internet Protocol, and Transmission Control Protocol are all examples or types of network protocols, but they each serve a specific function within the broader category of networking standards. Ethernet, for instance, is a protocol used primarily for wired local area networks, while Internet Protocol governs how data packets are addressed and routed on the internet. Transmission Control Protocol is also vital, as it ensures reliable communication by establishing a connection between sender and receiver. However, referring to the question in totality about a set of standards for connecting computers, a general network protocol is the most encompassing term.