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: Professional sportsmen must be required to represent their countries at the international level.
 perspective: Playing for your country is a mortal duty. 
support

claim: Force think tanks to reveal all of their sources of funding.
 perspective: Think tanks should be assessed by the value of their ideas, not by who funds them
undermine

claim: Bottled water should be banned.
 perspective: Banning bottled water restricts consumers' access to a product they want, and negatively affects small businesses. 

undermine