The theme that family relationships are tested when lives are at stake was tested when the Jewish committee leaders and their Nazi cooperated.
It should be noted that a theme simply means the main idea in a story. It's the underlying message.
In this case, one of the themes of Maus is “Friendship and family relationships are tested when lives are at stake”. This was reflected when the Jewish committee leaders and their Nazi cooperated.
Learn more about themes on:
https://brainly.com/question/11600913