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.
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Question: claim: Gay couples should be allowed to marry.
 perspective: Legalizing gay marriage often leads to an end to domestic partnership benefits for gay and straight couples, which disadvantages couples who choose not to get married. 

Answer: undermine


Question: claim: Creationism should be discussed in school science lessons.
 perspective: Students should learn creationist throeries from all religions. 

Answer: support


Question: claim: All nations have a right to nuclear weapons.
 perspective: It is very difficult to intercede in humanitarian crises in states wherein nuclear weapons are present.

Answer:
undermine