Which principle was upheld by the Magna Carta concerning imprisonment?

The principle upheld by the Magna Carta concerning imprisonment is the immunity from illegal imprisonment for free men. This foundational document, signed in 1215, established that no free man could be imprisoned without due process of law, effectively introducing the notion that individuals have certain rights that cannot be infringed upon by the state. The principle directly aligns with the concept of personal liberty and protection against arbitrary detention by authority figures.

This context is critical because the Magna Carta laid the groundwork for many legal systems that followed, emphasizing the importance of lawful imprisonment procedures. It sought to limit the powers of the monarch and ensure that anyone who faced imprisonment had the right to challenge that imprisonment in a court of law, protecting individuals from being unjustly detained without sufficient legal justification.

The other options, while related to rights and legal processes, do not accurately represent the specific principle regarding unlawful detention as clearly illustrated in the Magna Carta.