Research depends much more heavily on researcher expertise and subjectivity.

The correct option is qualitative research
qualitative research is subjective in nature and its methodology includes content analysis, case studies and narratives.Qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. They do not involve measurements or numbers. For instance, colors, shapes, and textures of objects are all qualitative observations

The right answer is qualitative research.

Qualitative research is one in which environmental situations, time period or a person being investigated to perform an interpretation, focusing on the relationship between the results obtained. Unlike quantitative research, qualitative research does not attempt to generalize the data but rather seeks to know the reality of a person or a group of people at a given time.

I hope this information can help you.

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !