Liquidtight flexible metal conduit (LFMC) is permitted for what application?

Liquidtight flexible metal conduit (LFMC) is specifically designed for applications where protection from moisture and exposure to various environmental conditions is necessary. It is often used in situations where flexibility and the ability to withstand some degree of physical stress are essential.

Option B is correct because LFMC can indeed be utilized for direct burial applications, provided that it is listed and marked accordingly. This means that the conduit has been tested and classified for this specific use, ensuring it meets safety standards for protection against moisture and environmental hazards when buried underground.

Other options limit the application of LFMC unnecessarily. It is not restricted only to surface mounting, nor is it confined to indoor settings. Additionally, while it can be used for temporary installations in certain circumstances, this is not its only or primary application. The capability to be employed in direct burial scenarios showcases its versatility and suitability for a wider range of installations.