Write three paragraphs using reliable resources. Make sure to have multiple cita

Write three paragraphs using reliable resources. Make sure to have multiple citations in each paragraph, not only one in each paragraph.
Post an explanation of a threat to internal validity and a threat to external validity in either quantitative or qualitative research. Next, explain a strategy to mitigate each of these threats. Then, identify a potential ethical issue in research and explain how it might influence design decisions.