I believe it's one of the situations where the question is trying to trick us and we need to identify which is sufficient and which is necessary.

i confused sufficiency and necessity and used any as the indicator rather than if. i answered my own question!

for number 2 --> i got the valid conclusion right but my lawgic looks different from the answer. i have /adopt new --> cats 4+ weeks because according to group 1 conditionals, the idea following the conditional is the sufficient condition. why is this wrong and does this matter?

Can someone help me understand how to chain #2?

Is the necessary condition always on the right side of the arrow?

In 5.1, why is "Who" not a referential to the ogre?