Accounts playable is right, most of the causation weaken/strengthening questions that i have come across draw some correlation between two things and then make a casual conclusion that you either need to best weaken or best strengthen.
Nope, it won't matter. They'll take your highest because it's a mutually beneficial relationship -- they get to record your highest LSAT on their books and you get to go to their school.
... rightly said, however, the support relationship between the premise and the ... the necessary assumption destroys the relationship between the premise and conclusion ...