Research methodology refers to the systematic and scientific approach employed to collect, analyze, and interpret data for the purpose of answering research questions or testing hypotheses. There are several types of research methodology that researchers may use, depending on the nature of the research question, the available resources, and the goals of the study. Some common types of research methodology include quantitative research, qualitative research, mixed-method research, experimental research, and case study research. Each of these research methodologies has its own strengths and limitations and is best suited for different types of research questions and situations. Choosing the appropriate research methodology approach is an essential step in conducting research that is valid, reliable, and meaningful.