In this task you will be given a claim and a perspective. You should determine whether that perspective supports or undermines the claim. If the perspective could possibly convince someone with different view, it is supporting, otherwise it is undermining.

claim: permit the use of performance enhancing drugs in professional sports.
 perspective: Sports is about competing on a level playing field and allowing drugs will ruin that.
undermine

claim: Roger Federer Is Not the Greatest Tennis Player of All Time.
 perspective: He has just won Wimbledon 2012 (17th grand slam) and gone back to number 1 again
undermine

claim: It is time to stop buying bottled water.
 perspective: Invaluable for travellers in areas with unsafe tap water

undermine