Dr. rodriguez is interested in finding out if stress levels throughout the year have a relationship with student's grades. the research method she most likely used is

It can the reader to have a broader understanding of the point or main idea of a passage/essay. if you use words with similar meanings throughout a written work, it can show the reader that the words reflect the key idea of a passage. this can really you to understand what is going on, and reflect on some key ideas and phrases that were mentioned in said written work.i hope this !