The Answer is
A. Black box,because black absorbs more heat than white
An example is that on a sunny day you were wearing a black t-shirt you would be sweating you bottom off but if you were wearing a white t-shirt you would be less hot and not sweating your bottom off. Why? Because black absorbs more heat rays than white does
Studies of populations that reveal correlations between dietary habits and disease incidence are epidemiological studies.
I think this is the answer key.. tell if you need help read it :)
