Okay just so I can understand why C is incorrect Im going to leave a reply. The study never says that they are comparing Plant A and Plant B's productivity. Rather they are looking at the increase of productivity within each group. For all we know Plant B could've been more productive this whole time but that doesn't matter. What matters is that free nutritious breakfast was only offered to Plant A, therefore we have so assume that Plant B didn't eat a nutritious breakfast on its own. And thats why answer choice A is correct.

#feedback Can someone help me with my reasoning. I choose C but after reviewing, I want to know if this is the correct way to look at answer choice D.

IF every year the strain of influenza virus deemed most likely to be prevalent will be one that had not previously been deemed most likely to be prevalent THEN every year it will be necessary for all high-risk individuals to receive a vaccine for a different strain of the virus.

#help #feedback I need a better explanation on why answer choice C is wrong on question #20. I understand some other scientist can debunk the claim but thats never stated in the argument. However the argument made in passage is similar to what is stated in answer choice C. The explanation is not relevant.

This is exactly what I thought until it clicked that a contrapositive is just another way of repeating the same statement. Versus here you're defining what it is NOT.

I watched this lesson thinking it was taking the contrapositive of the claim cause of the use of negation. But then I realized they were two different things...

I believe the sufficient condition is succeed and the necessary condition is having an emotional buyer.

I think this is one of the examples where the conditional indicator words are over-inclusive and doesn't mean Group 4. I think! Not completely sure.

I had the same question as the above user! Thank you for clarifying this. It was really helpful to be able to differentiate that the indicator words should be between two ideas versus just looking out for all indicator words!