What describes a branch in plumbing terms?

In plumbing terms, a branch refers to a horizontal extension of the piping system that connects to the main line and distributes water to various fixtures or appliances. It is important for the functioning of a plumbing system, as it allows for the flow of water to different areas within a building, accommodating the needs of multiple outlets or fixtures.

The other options do not accurately capture the definition of a branch. A vertical section of pipe describes a riser, while a part that connects to a kitchen sink is more specific to a fixture trap or tailpiece. A junction for hot water pipes could refer to any fitting or connection but does not specifically define what a branch is in the context of plumbing. Understanding the designation and role of branches in the piping system is crucial for effective plumbing design and installation.