Final answer:
Poplin is the fabric with a fine horizontal rib formed by larger weft threads than warp threads in a plain balanced weave.
Step-by-step explanation:
The fabric with a fine horizontal rib created by weft threads that are slightly larger than the warp threads in a plain balanced weave is known as poplin. Poplin is characterized by its distinctive ribbed texture and is a popular choice in the textile industry for items such as shirts and dresses, providing a smooth yet structured fabric with a slight horizontal effect.
Poplin is a plain balanced weave fabric that is often made from cotton or a cotton blend. It is known for its smooth texture and ability to resist wrinkles.