What type of cable can be buried directly under a building without requiring a raceway or conduit?

The correct choice for the type of cable that can be buried directly under a building without the requirement of a raceway or conduit is Type UF (Underground Feeder) cable. Type UF cable is specifically designed for underground installations; it is constructed with materials that provide protection against moisture and soil acidity, making it suitable for burial directly in soil. This type of cable is typically used for outdoor lighting, underground feeders to buildings, and similar applications where direct burial is necessary.

Type NM (Non-Metallic Sheathed Cable), while commonly used in residential wiring, is not suitable for direct burial as it does not have the necessary moisture resistance. Type MC (Metal-Clad) cable is used in many applications as well, but it generally requires protection against physical damage when used outdoors. Type A cable is less commonly referred to in standard electrical definitions, potentially leading to confusion regarding its properties and applications.

Overall, Type UF is recognized for its direct burial capabilities, ensuring both safety and regulatory compliance in electrical installations.