What are the possible limitation or difficulties that may arise when conducting research?

The limitations of the study are those characteristics of design or methodology that impacted or influenced the interpretation of the findings from your research. Limitations are important to understand for placing research findings in context, interpreting the validity of the scientific work, and ascribing a credibility level to the conclusions of published research. This goes beyond listing the magnitude and direction of random and systematic errors and validity problems. Related secondary data is sometimes not available or accessing available data is difficult/impossible. Difficult to understand context of a phenomenon. Data may not be robust enough to explain complex issues.

Explanation:

the statement that best explains why the tenth amendment reserves some rights and powers to states is that the framers believed in the principle of federalism. this principle says that some powers are in the hands of a centralized national government, while others are reserved for the governments of several states.