By far the most prevalent plant fiber is:

Question

Quizplus · Accepted Answer

Cotton is the most widely used plant fiber, accounting for over 90% of global fiber production. It is commonly used in clothing, home textiles, and industrial products.

Other options:
A) Linen is made from the fibers of the flax plant and is used for apparel and home textiles, but it is not as widely used as cotton.
B) Hemp is a strong and versatile fiber, but it is not as widely used as cotton.
C) Silk is a protein fiber produced by silkworms, not a plant fiber. 
E) Kapok is a plant fiber used for insulation and stuffing, but it is not as widely used as cotton.

By Far the Most Prevalent Plant Fiber Is