The document defines and compares four research methods - primary, secondary, quantitative, and qualitative research. It provides advantages and disadvantages of each method. Primary research involves collecting new data through surveys or interviews and provides accurate up-to-date information but is time consuming and expensive. Secondary research uses existing information and is quick and easy but may be outdated. Quantitative research uses structured questions to study large numbers of people and provides precise data but ignores context. Qualitative research allows for in-depth examination but depends on the researcher's skills and biases. The document then asks about the research methods and techniques used for assignments in prior units, how information was organized, and whether different methods would be used if repeating the projects.