The answer is C because the force of gravity on the surface of Mercury is much less than on Earth.
Common law is a law that established by court decision rather than by statues enacted by legislature .
Common law called like that because it was intended to be applied uniformly and therefore be coming among the courts of the various jurisdictions in England .
I hope that's help !
A lot of countries had totalitarian leaders during this time, such as Germany (Hitler), Italy (Mussolini), Japan (Tojo), Spain (Franco), Portugal (Salazar), and possibly many others, too.