Which of the following aids in the stringing operation of conductors?

The aid that plays a crucial role in the stringing operation of conductors is the Kellum grip. This specialized tool is designed to securely grasp the conductor during the installation process, enabling the smooth and safe handling of the wire. When stringing conductors, maintaining control and preventing damage is vital, and the Kellum grip ensures that the conductor can be easily maneuvered without slippage.

When using the Kellum grip, the design allows it to be applied in a way that distributes tension evenly across the conductor, which helps avoid damage to the insulation and minimizes the risk of abrasion. This is particularly important when working with long spans or in windy conditions where the conductor may be subjected to various forces.

The other options, while related to electrical work or installation processes, do not specifically serve the same function in the stringing operation. For instance, bundled conductors typically refer to a method of packaging conductors, a guard structure is used for safety and protection, and blade and prong tools have different applications in line maintenance or installation. The Kellum grip stands out as the tool specifically tasked with facilitating the actual stringing of conductors.