The formation of a middle class did affect peasants during the Middle Ages because peasants had an opportunity to move up in the social hierarchy by becoming artisans, merchants, or other types of professionals.
The answer would be letter A.
Answer:
B. Cross-Sectional
Explanation:
A Cross-sectional study of design is a kind of design of observational study . In the cross-sectional study, an investigator measures or examines the outcome as well as the exposures in any study participants at the same time.
Cross-sectional design research includes using some different category of the people who differ in some variable of interest but they share few other characteristics, like educational background, socioeconomic status and ethnicity.
A Cross-sectional studies are mostly used by experimenters or researchers to study the developmental psychology in humans.
Thus in the context, the researcher using 50 participants to study the developmental changes in their choices to listen to music is a type of cross sectional research design.
Hence the correct option is (B).
Answer:
I believe the answer is D.
Built between 1817 and 1825, the original Erie Canal traversed 363 miles from Albany to Buffalo. It was the longest artificial waterway and the greatest public works project in North America. The canal put New York on the map as the Empire State—the leader in population, industry, and economic strength.
