What is a requirement for MC cable support according to NEC guidelines?

The National Electrical Code (NEC) specifies that Metal-Clad (MC) cables must be securely supported to ensure safety and compliance within electrical installations. According to the NEC guidelines, the appropriate requirement for the support of MC cable is that it must be secured at intervals not exceeding 6 feet and within 12 inches of any termination or junction point. This ensures that the cable is well supported to prevent undue stress and damage which could lead to safety hazards, such as electrical shorts or fires.

While other intervals mentioned in the choices may seem plausible, they do not align with the NEC's specific requirements. The correct choice reflects the recognized industry standard for the necessary support intervals, prioritizing safety in electrical cable installations.