In a 2- to 3-page paper, address the following: What is the research design? Des

In a 2- to 3-page paper, address the following:
What is the research design?
Describe what is meant by a unit of analysis in a research study.
Explain what is meant by causation in research.
Describe what variables are in research design.
Your paper is to include your name, the assignment name and number, the course and section number, and the date on your title page. Format your paper and cite ALL sources according to current APA style.
Book Principles of Sociological Inquiry – Qualitative and Quantitative Methods chapter 4 and chapter 5 for reference