Problem: Amy bought a brand new car last weekend while Kayla didn't, because 

My choice: Amy is very wealthy.


Problem: Benjamin had to dry off after coming in from outside while Eric didn't because 

My choice: Eric walked around the puddle.


Problem: Jennifer always tried to be nice to Rebecca even though they were not nice in return, since 

My choice: Rebecca was a bad person.


Problem: Adam showed up empty-handed to the housewarming party, while Joel brought a gift, because 

My choice:
Joel was polite.