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: Abolish all collective bargaining rights claimed by trades unions.
 perspective: We must maintain collective bargaining to hear all voices.

Answer: undermine


Question: claim: You should join Facebook.
 perspective: We must always be careful what we post on Facebook or there could be negative consequences.

Answer: undermine


Question: claim: School Uniforms Should Be Mandatory.
 perspective: Students don't want school uniforms.

Answer:
undermine