Thermal energy quantifies the amount of heat present in the body and is calculated through the equation,
H = mcpdT
where H is the heat, m is the mass, cp is the specific heat, and dT is the temperature difference. If all things are constant, and the thermal energy is halved then, dT should also be reduced to half.
Hydrosphere - all the waters on the earth’s surface.
I hope it's not too late, but here you go
1 cubic cm is the same as 1 mL, so the answer would be C.