Answer:
The purpose of the literature review is to present the entire theoretical background and the research sources that formed the basis for the elaboration of the research.
Step-by-step explanation:
Whenever scientific research gives rise to an article, one of the most important and essential parts of that article is the literature review. This is because it is in the literature review that the researcher presents the entire theoretical basis of the research, showing what is already known about the researched topic and presenting other researchers and articles that address the research topic through scientific facts. In this way, the researcher shows all the research sources he used, strengthening the article and showing that the research has correct and true information.