Final answer:
The sentence is giving an opinion instead of providing evidence, which is not appropriate for an argumentative research paper.
Step-by-step explanation:
The sentence is giving an opinion, which is not appropriate for an argumentative research paper. In an argumentative research paper, the writer should provide evidence and logical reasoning to support their claims, rather than stating personal opinions. To make the sentence suitable for an argumentative research paper, it can be revised to say, "The death penalty should be abolished due to its violation of the Eighth Amendment." This revised sentence focuses on providing evidence rather than personal opinion.
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