The purpose of examining the validity of a research design includes all of the following except: a. determining generalizability of findings b. identifying threats to validity c. judging the credibility of the researcher d. determining if rival hypotheses or alternative explanations for finding might be possible.

The correct response is option D: Determining if rival hypotheses or alternative explanations for finding might be possible.

Explanation:

A research design describes the research methods and techniques that the researcher used to collect their data. The research design should explain why the research methods are suitable for the subject matter.  Examining the validity of a research design is done so that the credibility of the researcher can be established and so the readers and fellow scholars can assess for themselves if the study was carried out rigorously or whether there may be some limitations in the data.  The researcher needs to list any known threats to validity and they should also explain to what extent the findings are generalizable.  

i think it's the cabinet

answer; can each be concretely realized in different ways;