In coastal towns, breezes tend to blow offshore (from the land to the ocean) during the night and early morning, and onshore (from the ocean to the land) during the afternoon and evening. What factors primarily contribute to this effect?

It can be more than one answer!

A.Heat conduction
B.Heat convection
C.Specific heat of land vs water
D.Salinity of the water
E.Thermal expansion

When you are calculating the heat energy lost by the hot water what is the mass. Is the mass how much hot water there is or how much water the hot water and the mixture has. Thanks!