Okay so, the first answer you had is correct. It will be B. as you go deeper into the ocean, temperature decreases and pressure increases too much for a body to withstand. The second question or picture will be the relationship between area geography and the temperature of its surface water would be that areas at low altitudes have the warmest water because they receive the most direct sunlight or C. The last question or picture is freezing of glaciers would do absolutely nothing to the salinity, as for hot weather and evaporation would leave behind the salt and thus INCREASING the amount of salinity. Hope I helped!