Jennifer wants to collect rich data about the lives of Native Americans who live on reservations. She wants to be able to not only document their lived reality but also to describe it as closely as possible. The best method of research for this kind of study would be

Ethnography

Explanation:

Ethnography is a qualitative research method which deals with the in-depth study of a culture or a facet of a culture usually based on participant observation. Ethnographers don't only observe the culture under study, but also become a part of it so they can have detailed information about the subject of research.

two jet streams that directly affect the formation of weather in the continental part are a polar jet and a subtropical jet. they are responsible for the transportation of weather systems, which directly affect people. the polar front is the boundary between cold air from the north pole and warmer equatorial air. both the polar jet and the subtropical jet blow from the west to the east, and follow the boundary between cold and warm air.

the strongest jet streams are polar jets, while subtropical jets are somewhat weaker.

the right answer is c. the polar jet stream is generaly stronger than the subtropical jet stream.