In the speech excerpt, one can see that there was the use of different types of supporting materials. From it, we can see that it lack diversity in its approach in terms of showing the supporting materials.
In the first Paragraph, one can see that the supporting evidence do Strengthens the Paragraph as it tells the failures occurring in Emergency rooms.
Note that looking at the excerpt one can see that there was total support on the expert testimony way of supporting material in the speech and as such, it can only appeal to a specific kind of listener.
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