Which carpet is made from recycled plastic bottles and is also referred to as polyester?

The answer is that PET, or polyethylene terephthalate, is made from recycled plastic bottles and is commonly referred to as polyester. This material is notable for its sustainability, as it utilizes post-consumer waste, specifically old plastic bottles, thereby reducing environmental impact and waste. PET carpet fibers are appreciated for their stain resistance, color retention, and ability to withstand wear, making them a popular choice in both residential and commercial settings.

The term "polyester" is often used interchangeably with PET, as PET is a type of polyester resin. This relationship highlights the material's versatility and the advancements in recycling technologies that allow for the creation of durable, functional carpet products from recycled materials.

In the context of the other options, PP (polypropylene) is another synthetic fiber used in carpets, known for its durability but is not derived from recycled plastics. Nylon is a strong, synthetic fiber often seen in carpets but does not originate from plastic bottles. Acrylic is a synthetic fiber that mimics wool, but again, it is not related to recycled materials like PET. Therefore, the distinct characteristic of PET as a carpet fiber made from recycled plastic bottles solidifies its role as the correct answer.