Hi, the first sentence tells us that a cohesive group can do a better job at decision making than noncohesive group. I think this generally supports C?

Hey guys, The original argument said: ("~" means correlation) Premise: Psychological factors ~ Permanent high blood pressure ~ Heart disease Conclusion: Psychological factors --> Heart disease To simplify: Premise: A ~ B ~ C Conclusion: A --> C I found the most used way to point out ...

I narrowed down to A & B, but don't know why B is better, can anyone explain? thanks.