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: The United States was correct in going to war against North Korea in support of their territory of South Korea.
 perspective: To invade could trigger an Arms Race: the very thing everyone wants to avoid!
undermine

claim: Marriage is an outdated institution.
 perspective: Marriage provides protection to both parties in the form of legal protection.
undermine

claim: The Republika Srpska must be allowed to secede from Bosnia & Herzegovina.
 perspective: The is a valid criterion. 

support