A researcher identifies an important extraneous variable after a study is under way. What is the best action for the

A researcher identifies an important extraneous variable after a study is under way. What is the best action for the researcher to take now?
A)Determine whether the extraneous variable is an independent or dependent variable.
B)Stop the study, then redesign it so as to control for this extraneous variable.
C)Attempt to measure the extraneous variable so that its effect may be determined during the analytic phase.
D)Nothing now. Plan to identify this as a limitation during the dissemination phase.

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