- PowerScore Staff
- Posts: 1670
- Joined: Dec 06, 2013
Your reasoning for answer choice (C) is perfect. If other countries are also doing it, there's less chance the the US actions are actually having any effect.
For one thing to be the reason another increases, there must be causation. So the author is committed to a cause and effect argument, with all the flaws that always involves.
And one more thing - you're right that "greatly increases" is vague, but the question type is Weaken! So all we have to do is make the argument even a little bit worse. Whatever effect US manufacturing is having, that effect is less likely to manifest if other countries are also doing the same thing. The argument isn't disproven, but it's somewhat worse, which is all we can ever ask of an answer choice for a Weaken question.