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
I am pretty sure the answer is D (combination)
It is a result of. Erosion
Should be called the Manubrium!