If an Experiment Cannot Be Done for Practical or Ethical

Multiple Choice

If an experiment cannot be done for practical or ethical reasons related to manipulating the variable of interest, which of the following events should happen?

A) The study should not be conducted at all.
B) The researchers should wait until the experiment can be done.
C) A longitudinal correlational design could be done instead.
D) The IRB can grant a waiver of review to conduct the study anyway.