What is the other name for artificial silk? 

Rayon 

The correct answer is option 2. Rayon.

Rayon is often referred to as "artificial silk" due to its silky appearance and texture. Here's an explanation of why rayon is considered artificial silk:

1. Cellulosic Fiber:  Rayon is a man-made or synthetic fiber, but it is derived from natural sources, primarily wood pulp. The base material for rayon is cellulose, a natural polymer found in the cell walls of plants.

2. Silky Texture:  The manufacturing process of rayon involves chemically treating and processing the cellulose from wood pulp to create a fiber with a smooth, silky feel. The resulting fabric closely resembles the texture and appearance of natural silk.

3. Similar Characteristics to Silk:  Rayon shares some properties with silk, such as its softness, drapability, and sheen. It can be used in various applications where a silk-like appearance and texture are desired but at a more affordable cost.

4. Versatility:  Rayon is a versatile fiber that can imitate the characteristics of different types of natural fibers, including silk. Depending on the manufacturing process, rayon can be produced to have a variety of textures, making it suitable for a range of applications in the textile industry.

It's important to note that while rayon is often called artificial silk, it is a distinct fiber with its own set of properties and characteristics. It provides a more cost-effective alternative to silk while offering similar aesthetic qualities.