What is a significant effect of improper cleaning on fabrics with a silky finish?

The choice highlighting loss of sheen as a significant effect of improper cleaning on fabrics with a silky finish is correct because fabrics with a silky finish, such as silk or satin, are especially susceptible to changes in their appearance caused by inappropriate cleaning methods. These fabrics are designed to showcase a glossy, reflective surface that contributes to their luxurious appearance.

Improper cleaning techniques, such as using harsh chemicals, excessive agitation, or inappropriate temperature settings, can strip away this sheen or alter the fabric's texture. As the sheen diminishes, the fabric may appear dull and less vibrant, losing the striking aesthetic that is characteristic of silky finishes. Maintaining the luster of these types of fabrics is crucial because it is often a primary reason why consumers choose them for upholstery or garments.

While other options such as color fading, weakening of fibers, and discoloration can also occur due to improper cleaning practices, the immediate and visually noticeable impact on silky fabrics tends to be the loss of sheen. This emphasis on maintaining the fabric's surface finish is essential for preserving its overall appearance and quality.