Which of the following is a listed low-voltage range mentioned for residential secondary service?

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The voltages used for residential secondary service are the ones that come from the service transformer and feed the building’s electrical system. A listed low-voltage range for residential service includes 120/208 V because it comes from a 3-phase system with a neutral, giving 120 V from each phase to neutral and 208 V between phases. This setup is common enough in multi‑unit or light commercial applications and is recognized as an acceptable residential secondary service voltage by listings and codes.

The other options represent higher or primarily commercial/industrial voltages (120/480, 347/600, 480/277) and aren’t typical residential secondary service voltages.