Which of the following fibre has highest tensile strength?

Nylon

The correct answer is option 4. nylon.

Nylon has the highest tensile strength among the options provided. Tensile strength refers to the ability of a material to withstand a stretching or pulling force without breaking. Nylon is a synthetic polymer known for its high strength and durability, making it suitable for applications where tensile strength is crucial, such as in the production of ropes, threads, and fabrics for various purposes. While silk is known for its strength, nylon generally surpasses it in terms of tensile strength. Cotton and rayon, being natural fibers, typically have lower tensile strength compared to synthetic fibers like nylon.