Which of the following is NOT considered a type of fiber line?

The correct answer is wire because it does not fall into the category of fiber lines. Fiber lines are typically made from organic or synthetic materials that possess flexibility, strength, and are often used in applications such as rigging, mooring, and hauling. Polyester, nylon, and cotton are all examples of fiber lines that have different properties and uses.

Polyester is known for its durability and resistance to UV rays and abrasion, making it ideal for outdoor applications. Nylon has excellent elasticity and strength, making it suitable for dynamic loads. Cotton, while not as strong or durable as synthetic fibers, is historically used for its natural feel and ease of handling.

Wire, on the other hand, is made from metal and is rigid, lacking the flexibility and characteristics that define fiber lines. It is used in different applications, such as electrical wiring or as part of certain types of rigging, but it does not share the same properties as fiber-based materials.