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Part G: Can we implement blinding with the volunteers, and, if 50, how? No, volunteers will know that they are in the study. (Yes, volunteers should not know what treatment they are receiving. Yes, volunteers who stay indoors can be provided with artificial lighting so that their experience is similar to those who go outside. (No, itis not possible to hide the treatment from the volunteers Part H: Can we implement blinding among those who interact with the volunteers? Yes, and this would help control confounding variables. ( No, but this would not help control confounding anyway. No, but it does not matter because the placebo effect would not be a problem anyway. es, but this would be of no value since the volunteers already know about the treatment. Part Il: Whatis one disadvantage to blocking? It can introduce confounding variables. It can end up dividing the volunteers into so many groups that there are too few volunteers in each group. lt makes the experiment less sensitive to changes in average BMI