What does PVC stand for in plumbing terminology?

The correct answer is Polyvinyl Chloride, commonly abbreviated as PVC. This thermoplastic polymer is widely used in plumbing due to its durability, resistance to corrosion, and lightweight nature, making it easy to handle and install. PVC pipes are often used for water supply, drainage, and irrigation systems.

The other options do not accurately reflect the correct terminology. Polyethylene Vinyl Chloride is a combination of two different types of plastics and is not a standard term. Polymerized Vinyl Compound is not a recognized term in the context of plumbing materials, and Polyvinyl Carbonate is also incorrect as it refers to a different type of plastic that does not align with standard plumbing practices.