Which of the following is an example of a natural fiber rope?

The example of a natural fiber rope is cotton. Cotton is derived from the fibers surrounding the seeds of the cotton plant and is a biodegradable material. It has been used for centuries in a variety of applications, including rope-making, due to its good tensile strength, flexibility, and ability to absorb moisture.

On the other hand, nylon, polypropylene, and polyester are all examples of synthetic fibers. These materials are manufactured through chemical processes and offer strengths and characteristics that are often superior for specific applications, such as resistance to abrasion and weathering. However, they do not fall under the category of natural fibers because they are not derived directly from plants or animals.