Anthropologists have long debated whether the customs of a culture invariably function to preserve it. According to one proposed definition, a culture is the totality of the customs practiced by those whose culture it is. If this definition is correct, then the customs of a culture necessarily function to preserve it, even any custom by a culture’s members would by definition constitute that culture’s destruction.
What this question is testing
Your task
Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.
Common trap
Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.
Winning move
Predict what a right answer must do, then test each choice against the conclusion-evidence gap.
Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.