In your own words supported by literature, share with us your answer to the following question, What is a dissertation?

2a. In your own words supported by literature, share with us your answer to the following question, What is a dissertation?2b. After reviewing the background readings and other external sources as applicable, briefly discuss how a dissertation can be used in the field of interest for each of the following:PractitionerScholarResearcherTeacherKeep the overall total word count to no more than 400 words.