In the article, the author discussed the difficulty that the United Nations had in drafting a definition of terrorism.Why was there so much disagreement on the issue?

Disagreement arose because “terrorism” is a controversial label with no easily agreed-upon characteristics. Some legitimate organizations have been called terrorist even though violence was not their main way of seeking change, and people have disagreed about whether particular movements were terroristic. These points match B, C, and D; the choices about UN member states supporting al Qaeda and the UN dealing only with social matters do not explain the definitional disagreement.

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