Among the following materials, which is a characteristic of low-impact fabrics?

Low-impact fabrics are designed with sustainability in mind, and one of their key characteristics is that they are biodegradable. This means that when these materials are disposed of, they can break down naturally and safely into the environment, causing minimal harm. Biodegradability is important for reducing environmental waste and supporting a more sustainable lifecycle for textiles.

The other options do not align with the principles of low-impact fabrics. High toxicity refers to materials that can be harmful to both human health and the environment, which is the opposite of what low-impact fabrics stand for. High emissions during production contradict the aim of reducing environmental impact, as such fabrics are meant to have lower emissions throughout their lifecycle. Finally, colorfastness is a quality that refers to how well a material retains its color when exposed to washing, light, or other environmental conditions; while it can be an important property for durability, it does not specifically relate to the sustainability or eco-friendliness that defines low-impact fabrics.