Which country or countries allow their citizens to vote for the president?
i. the united kingdom
ii. germany
iii. russia
a.
i. only
b.
ii. only
c.
iii. only
d.
ii. and iii.

Iii. only Russia

This is because the UK has no president, and in Germany it is just a committee 

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.