I don't understand how B is the answer. In the lessons regarding weakening, I was under the impression that we were to look for ways to weaken the connection between the Premises and the Conclusion. If the question states that "many human diseases are genetically based," then how does B not just attack the Premises? I mapped out ... human diseases (HD) are genetically based (GB)... HD -> GB. Then some of Cat's (CG) genetics are the same to humans (HG). ... CG(--s--) HG. Then I said Some of Primates (PG) genetics are the same as Humans .... PG (--s--) HG... the conclusion is humans have many diseases (HD) in common with Cats (CD) ...HD --m-->CD
I figured (albeit I now see that it was an incorrect conclusion... I just dont know why) that the question was trying to jump from some cats and some primates genes are the same as humans so therefore Humans have diseases in common with Cats. Answer C could provide a weaker link with the premise/conclusion connection by pointing out that a some correlation does not imply a most correlation.
Any help or guidance would be appreciated.
Are street criminals not able to commit crimes such as embezzlement or insider trading? What would happen if someone did that to a gang... do you think someone would sue someone for embezzling from their drug ring? (could be wrong in this... just taking a stab at it ;-)