For his post-doctorate research, Yani plans to study human development among indigenous cultures in the mountains of Peru. He plans to move to Peru to integrate with his study subjects, make social connections with them, and observe their daily life up close. Which type of research design is he using _________.a. An intervention
b. Ethnographic research
c. An experiment
d. A quasi-experiment

In sociology and research, an ethnographic research is a type of research where the researcher interact with the population he/she wants to study in their natural environment (this means, not in a lab or an artificial environment). This type of research allows the researcher to get a better understanding of the culture and the population he/she is studying.

In this example, Yani wants to study human development among indigenous cultures in the mountains of Peru and he plans to move to Peru to integrate with his study subjects and make social connections and observe their daily life up close, we can see that he wants to interact with his study subjects in their natural environment in order to get a better understanding of their culture. Therefore, this type of research design is an ethnographic research.