A literature review is a section of a final research report, and can also be a stand-alone essay; both are required for your topic in this class.
"Literature" refers to the scholarly writing, published (original) research study results, and other important analyses on a particular aspect of a topic.
Challenging the results of a professional study with nothing but one isolated observation or opinion will reveal your naivet more than any real weakness in the study.
Share your evaluation (I, me, my, mine); doing so will shift the reader’s focus away from the subject and onto you, the writer.
Introduction: The introduction presents your narrowed topic or area of inquiry, whether from the conclusion of your Background Essay or based on a later formulation, and an overview of the various subtopics, issues, and problems that scholarly researchers have studied (which will also be reflected in the topic sentences of your Summary paragraphs).
Also include a thesis statement that provides your evaluation of the state of current knowledge and of what needs further study, which should anticipate the specific research question you will arrive at in the end.
So you are not going to write an essay on a Shakespearean play or some other literary text.
A scholarly literature review is part of any final research study or report since it demonstrates that you are familiar with what other other scholars have already studied and published on your subject, and allows you then to map out what new arena or question you would like to pursue.
There is, after all, no point in reinventing the wheel, i.e., undertaking a study that someone else has already done or trying to answer a question that has already been adequately explored.
And there's also no point in reaching your own interpretive conclusions without taking into account what others have already studied and argued.