Final answer:
A summons is not a call to appear in court, a lord does not give ownership of a fief to a vassal, and a knight does not serve a vassal.
Step-by-step explanation:
The statements that are not true are:
- A) A summons is a call to appear in court. A summons is a legal document issued by a court, ordering a person to appear before the court at a specified time and place. It is not a call to appear in court.
- C) A lord gave a vassal the rights to control the fief and to have ownership of it. In feudalism, a lord granted a vassal the right to use the fief and its resources in exchange for services and loyalty. The lord retained ownership of the land.
- D) A knight may serve a vassal in exchange for land. In the feudal system, a knight would serve a lord or a higher-ranking vassal in exchange for land or other privileges. A knight would not directly serve another vassal.
Therefore, options A, C, and D are not true.