In the first place, when making a research question, it should be focused on one problem only that should be answered. Making a research question is one of the first steps in the scientific method. Therefore, what is being asked is the only one should be answered and it should remain all throughout the study. In this case, what Cosmo should do is just to stick with the original question and ignore the new information since this does not provide answers to the question itself. The answer would be option D.