In ethnomethodology, the ideas we take for granted that underlie our behavior and that we violate at our risk are called

They are called BACKGROUND ASSUMPTIONS.

Explanation: Ethnomethodology can be defined as a method of sociological analysis that examines how people use daily interactions to construct a basic understanding view of the world.

Background assumptions are the way individuals view the world and what they believe it is supposed to be. They are often not correct as society has standards and our standard or what we feel might not be plausible in a real world. Therefore, background assumptions put individuals at risk.

answer; i do believe its (b) 12.5 years of age;

answer; utilitarian;