Under what condition may the writ of habeas corpus be suspended?

The writ of habeas corpus, which protects individuals from unlawful detention, can be suspended under specific circumstances as outlined in the U.S. Constitution. The Constitution states that this writ may be suspended "when in cases of rebellion or invasion the public safety may require it." This provision is crucial as it allows for the temporary suspension of this legal safeguard in extreme situations where public safety is at risk, emphasizing the balance between individual rights and the needs of the state during crises.

Other options do not align with the conditions defined in the Constitution. For instance, the writ cannot be suspended during normal judicial proceedings or times of peace, as those are situations where the protections of habeas corpus are particularly important. Additionally, the President alone cannot arbitrarily suspend the writ; it requires a situation of rebellion or invasion that poses a direct threat to public safety, which must be addressed through legislative or established legal channels.