Coherence is best described as
the unity in a paragraph
the conclusive repetition in body paragraphs
the order of ideas enabling the reader to move easily from point to point.
the development of a major thesis

the choice that is not a technique that you should use to come up with ideas for the topic of a research project is, writing about academic subjects that are not interesting to you. this does not belong to the techniques to come up with ideas because having no interest in a certain topic will lose your drive to come up with better ideas. it gives no room for improvement and acquiring of new ideas and information. 

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