Which type of natural fiber rope is sturdy enough for lifting service?

• A. Cotton
• B. Sisal
• C. Coir
• D. Number one grade manila

Answer: (D)

The correct answer, number one grade manila rope, is known for its exceptional strength and durability, making it suitable for lifting applications. Manila rope is made from the fibers of the abaca plant, which provides a high tensile strength and excellent resistance to wear, making it ideal for tasks that require lifting heavy loads. The fibers are also relatively resistant to saltwater, enabling them to be used in marine environments without significant degradation.

In comparison, while cotton, sisal, and coir ropes have their own uses, they do not match the strength and performance capabilities of number one grade manila rope. Cotton, although soft and easy to handle, lacks the necessary strength for lifting heavy loads. Sisal rope, while stronger than cotton, is less durable and can become weak when wet. Coir, made from coconut husk fibers, is also not as strong as number one grade manila and is better suited for applications like gardening or erosion control rather than lifting. Thus, number one grade manila rope is the most reliable choice for lifting service due to its robust properties.