Which of the following might indicate an involuntary confession?

A confession made in response to threats is a strong indicator of an involuntary confession because it suggests that the individual may not be acting of their own free will. Coercive tactics or threats can create an environment where the person feels compelled to confess, even if they are not guilty or if the confession does not reflect the truth.

Involuntary confessions often occur under duress, where the individual's ability to make a rational choice is compromised. Legal standards require that confessions be made voluntarily; otherwise, they can be deemed inadmissible in court. Therefore, if a person confesses due to threats, it undermines the legitimacy of that confession as it is not a product of free and willing self-determination.

The other scenarios may not clearly indicate involuntariness, as consistent questioning can still yield voluntary confessions, and a confession without evidence might stem from various factors unrelated to coercion. A confession during a break in questioning does not directly imply that the confession was involuntary either; it may simply reflect a change in circumstances or state of mind.