This type of research is descriptive and investigates the why and how of decision making, not just what, where, when. These methods produce information only on the particular cases studied, and any more general conclusions are only propositions (informed assertions).

a. quantitative

b. ethnographic

c. microgenic

d. qualitative

The correct answer is - option D.

Explanation:

Qualitative research is research or scientific method which is involved in various subject matters and fields, of collecting observation and nonnumeric data. This is the research normally is descriptive, exploratory and other qualitative methods to answer the question.

It is an investigation that is not just addressed what and where but also to the questions like how, and why. This is the reason these are used in small samples rather than large samples and also used on species cases to get information.

Thus, the correct answer is - option D.