Causal arguments show why and how a problem or trend has arisen.
This argument should present a specific problem or trend and isolate at least three causes for it. Or, the argument stresses the importance of realizing one major contributing cause over all others. Try to determine which of the causes are major underlying causes and which are minor, but substantive, causes for the problem or trend. The most challenging and important part of this argument is providing evidence for the causal relation. If you argue that the media causes eating disorders, for example, you want to provide evience which will convince your audience that indeed, the media is the primary contributing cause for eating disorders, rather than dysfunction in the family, say.