But from either world, at any given time, you can see varying portions of that lighted half – or various phases of the Earth or moon. The phases are always the reverse of …
C is the answer to this question. Hope this helps.!
The refraction of light at the surface of water makes ponds look shallower then they really are
Zeroth Law of Thermodynamics, which in turn will mean the heat will transfer between both of them up to the point where they are in thermodynamic equilibrium. So the answer is C.