What can make a confession admissible in court?

A confession can be deemed admissible in court when it is obtained through lawful and ethical methods. In this context, the correct choice emphasizes that the confession was made voluntarily and not under coercion or intimidation.

When a confession is obtained through threat of force or deprivation, it inherently violates the principles of free will and consent. Courts are concerned with the integrity of confessions, and those made under duress are often viewed as unreliable or forced. However, confessions made voluntarily, without any undue pressure, are generally accepted as admissible evidence.

Other options highlight different circumstances: lengthy interrogation may lead to issues of coercion, while the presence of legal counsel protects the rights of the individual during questioning—both factors could influence the admissibility of a confession if they indicate that the individual did not fully understand their choices. Witness testimony can support the context around a confession but does not directly relate to its inherent admissibility.