There is a little vertical mixing between layers because the warm water is atop the colder water Thus the option B is correct.
The ocean has a distinction between surface water and deep water. The surface water is warm and absorbs most of the suns energy. The Deepwater is cold and is found in greater depth below the surface such as those in polar regions. They have low temperatures and are less salty. It is more freshwater.
Find out more information about the surface water.
brainly.com/question/25186615.