How would you explain the terms internal and external validity (University of Kansas, 2018)?

How would you explain the terms internal and external validity (University of Kansas, 2018)?

Explain the key factors to consider in selecting an appropriate design for evaluation research. How would you explain the terms internal and external validity (University of Kansas, 2018)? In what ways would you ensure the validity of your evaluation research? Links for assignment- University of Kansas (2018). The community tool box. Operations in Evaluating Community Interventions. Chapter 37, Section 1 – Choosing Questions and planning the evaluation. Retrieved from https://ctb.ku.edu/en/table-of-contents/evaluate/evaluate-community-interventions/choose-evaluation-questions/main University of Kansas (2018). The community tool box. Operations in Evaluating Community Interventions. Chapter 37, Section 4 – Selecting an Appropriate Design for the evaluation. Retrieved from https://ctb.ku.edu/en/table-of-contents/evaluate/evaluate-community-interventions/experimental-design/main