Under which circumstances can entry to a premises for surveillance occur without notifying the judge initially?

The correct choice reflects a principle in surveillance law that allows for certain exceptions to the requirement for prior judicial notification. Under specific circumstances as provided by law, law enforcement may have the authority to enter premises and conduct surveillance without initially notifying a judge. This is often justified in scenarios where immediate action is necessary, such as preventing a crime, saving lives, or preserving critical evidence.

This option captures the essence of legal provisions that exist to ensure the efficacy of law enforcement while balancing individual rights and due process. Circumstances that might justify such actions could include issues related to public safety or the immediate preservation of evidence that could otherwise be lost.

The other responses suggest more restrictive situations that don't encompass the broader legal framework that allows for such surveillance measures without prior judicial notice. While immediate danger, destruction of evidence, and approval from district attorneys might all play roles in specific cases, the law provides a wider latitude under certain conditions which is why the second option stands out as the most accurate choice.