When writing a research essay synthesizing is important to support the author's own ideas. Thus the correct answer is C.
What is a research essay?
An argumentative essay allows you to give your own perspective and arguments based on an in-depth review and analysis known as a research essay.
In order to offer fresh insight or an alternative viewpoint on your particular issue, writing a research paper sometimes requires combining the sources that are already available. The authors' own ideas will be helpful in giving a conclusion.
Therefore, option C To support the author's own ideas is appropriate.
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