Notes

1.Documentary material means the original or a copy of a book, record, report, memorandum, paper, communication, tabulation, chart, or other document, or data compilations stored in or accessible through computer or other information retrieval systems, together with instructions and all other materials necessary to use or interpret the data compilations, and any product of discovery.

2.the genre of the material viewed text is Documentary

3.the documentary source is an important source of information for a researcher. A document is anything in writing a record,files or diaries, published or unpublished which can be extracted and can be used in research. It is a very valuable source of information for a research either in management or in social sciences. Documentation is the process of collecting and extracting the documents which are relevant to the research.

4. Yes and it depends on documentary there are basis if it is essential but if the video itself give the information that makes you contented/satisfied it's essential. You can also say that it's essential if there are people who states that it's true

Documentary is about a topic to the reality about a person or something.