Answer:
The correct answer to the following question will be Option D (External validity).
Step-by-step explanation:
External validity has been the validity of extending the results of a scientific investigation outside that study's context. In certain words, it's the degree to which the study results can be extended in certain situations, individuals, objects, and occasions.
External validation refers to the degree to which the results of your research project can be applied to people beyond your analysis.
There are three types of external validity, such as:
- Population
- Environmental
- Temporal
Therefore, Dr. Hadden should prioritize the external type of validity.