A factory spokesperson argued that the factory should not be required to clean up the water in the nearby wetlands, maintaining that although wastewater from the factory polluted the wetlands over the past several years, the factory is not to blame for this, since the disposal of the factory’s wastewater is handled entirely by an independent contractor.
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.