Read the following passage and answer the question. This act established procedures of criminal justice for all of England. As a result, Henry set up courts with trained lawyers and judges, and built prisons for those awaiting trial. He also appointed judges who traveled across the country to hear court cases. Theses periodic court sessions provided swift justice and clear verdicts, supplemented the treasury, and extended the king's control.
Select the best answer from the choices below.

a
Magna Carta
b
Assize of Clarendon
c
Parliament
d
Habeus corpus