In textile terminology, what is the 'filling' of the fabric?

The term 'filling' in textile terminology refers specifically to the horizontal threads woven into the fabric. This is also known as the weft, which runs perpendicular to the vertical threads, or warp. Understanding the structure of fabric is essential in the apparel and accessories industry because it impacts not only the appearance but also the durability, draping qualities, and overall texture of the material.

Recognizing the role of filling in fabric construction helps distinguish various fabric types and their qualities, allowing designers and marketers to select the appropriate materials for specific applications. Thus, option B correctly identifies the filling of the fabric as the horizontal threads.