A literature review is a critical analysis and summary of existing research and literature on a specific topic.
It involves identifying, evaluating, and synthesizing relevant literature and research studies to provide an overview of the present state of knowledge on the topic.
The purpose of a literature review is to identify the gaps in the current knowledge and to provide a context for the research question or hypothesis being investigated.
A literature review provides a comprehensive overview of the existing knowledge on a topic and serves as a foundation for new research studies.