Final answer:
A peace officer who gives materially false testimony under oath in a court of law is subject to confinement in prison.
Step-by-step explanation:
In the United States, a peace officer who gives materially false testimony under oath in a court of law is subject to confinement in prison. The severity and duration of the confinement will depend on various factors such as the jurisdiction and the specific circumstances of the case.
For example, in California, perjury (which includes giving false testimony under oath) is a felony punishable by imprisonment for up to four years. In federal court, perjury is also a felony and can result in imprisonment for up to five years.