Critical Reasoning (CR) | Re: In 1992 outlaw fishing boats began illegally harvesting lobsters from

Hello,
I am still not able to understand how can "A" be an assumption. All the explanations given till now are as if the people knew the OA and are just trying to prove that A is correct. No one has been able to give a logical reasoning.
Please help with this one by providing a step by step break up of the argument and then how "A" is the OA.
Awaiting a quick response.
Regards

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