The answer is b. Constitutional monarchy. I know this because all of the other ones are examples of other types of governments. This is the only one that is a true cross between the two
Convergent oceanic continental
coal, copper, lead, iron, natural gas, timber, bauxite, and uranium.
It depends on the mass of the ice,temperature around it and latent heat energy required to melt the ice.
However the furthest a ice berg can travel is estimately 32-40°n/s