What is the timeframe for submitting a supplemental report after a nuclear accident?

The correct choice indicates that a supplemental report must be submitted daily or as directed by the director of nuclear surety. This reflects the urgency and the importance of maintaining updated and thorough documentation during a nuclear accident scenario. Regular updates are crucial in ensuring all relevant information is communicated effectively and swiftly to address the situation appropriately.

In the context of nuclear safety and emergency management, the requirement for daily reports allows for ongoing assessment and response to any developments that may arise after the initial incident. This procedure is vital because it supports decision-making and helps to mitigate any potential hazards associated with a nuclear accident.

Other possible answers do not convey the same immediacy or thoroughness required in such high-stakes situations, making them less suitable in the context of established protocols for nuclear incident reporting.