If a researcher would like to get in-depth information based on interviews and firsthand observations, she should use the methodological approach known as a(n)

The correct answer is - Ethnography

Explanation:

Ethnography is a type of social and qualitative research that involves the collection of firsthand observations, interviews, and data to produce detailed and comprehensive information and social knowledge of different social phenomena.

It is also focused at those interested in considering the use of ethnographic methods in their own research work. Ethnography is mainly focused on research on social science-related research work.

The correct answer is - Ethnography