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 marriage should be legal.
 perspective: Legalizing gay marriage is a stepping stone toward disgusting and harmful marriage practices such as incestuous, bestial and child marriages. 

Answer: undermine


Question: claim: We must enforce term limits on the legislative branch of government.
 perspective: the longer someone is  in power, the more likely he will use it for personal advantage

Answer: support


Question: claim: social networking sites should be banned at the workplaces.
 perspective: Social media allows for rapid communication during crisis events.

Answer:
undermine