In case of true experimental research the investigator is always required to make a compromise between which of the following four is not correct? [3108]

Q) In case of true experimental research the investigator is always required to make a compromise between which of the following four is not correct? Options: A)Internal validity and external validity B) Contrived setting and natural setting C) Randomization and manipulation D) Control of extraneous variables and building the correlated variable into design.

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