for this question I think the answer should be "A" because it is irrelevant.
E cannot be the answer because it says
E. Ford City already had tough laws to punish operators of "puppy farms" long before the most recent year.
The argument says that crackdown was recent but the law was already there to punish them, so the crackdown is nothing special on breeders and hence this weakens the conclusion that crackdown was responsible.
"The Mayor of Ford City attributed this decline to the city's recent crackdown on unlicensed breeders that breed dogs dangerously fast and release any unwanted puppies on the streets"
Please help me understand this.
"A" weakens the argument because it's saying that Agange City (a city right beside Ford city) experienced the same decline even though they didn't crack down on puppy farms in their city. So it's likely that an outside factor, and not the cracking down of puppy farms, that is causing the decline.
"E" does not weaken the argument because it's simply saying that the laws to punish puppy farms existed before the recent years. It does not say how strongly these laws were actually being enforced in the past.