Final answer:
The two main classifications of Marketing Research are primary and secondary research, and quantitative and qualitative research.
Step-by-step explanation:
The two classifications of Marketing Research are a. primary and secondary research and b. quantitative and qualitative research. Primary and secondary research are classifications based on the origin of the data. Primary research involves collecting new data that has not been collected before, whereas secondary research involves the use of already existing data. Quantitative and qualitative research are classifications based on the nature of the data. Quantitative research is concerned with numbers and statistics, while qualitative research focuses on understanding concepts, opinions, and experiences through non-numerical data.