Which device is used to stabilize a pole other than a guy?

The correct answer, which identifies the device used to stabilize a pole other than a guy, is the pole key. A pole key is specifically designed to provide additional support and stabilization for utility poles. It helps secure the pole to prevent it from swaying or tipping, especially in adverse weather conditions or when other stabilization methods, like guy wires, are not utilized.

In contrast, an anchor base typically refers to a foundational element used to support various types of structures but may not specifically apply to pole stabilization in the same way that a pole key does. A ground screw serves as a type of foundation screw used to anchor posts in the ground, but it’s more of a primary installation tool rather than an ongoing stabilizing device. The support bracket can be used to stabilize structures as well, but it may not provide the same level of dedicated support to a pole as a pole key would. Thus, the pole key stands out as the most directly relevant device for this purpose.