when a continental margin is at the trailing edge of a continent and shows little geologic activity, it is…

when a continental margin is at the trailing edge of a continent and shows little geologic activity, it is called a/an select choice active margin passive margin
Answer
Brief Explanations:
In geology, a passive continental margin is at the "trailing edge" of a continent and has little geologic activity. Active margins are associated with significant tectonic activity.
Answer:
passive margin