From all the aforementioned, the best statements which describe the processes by which oceans were created are: "The Earth's crust is constantly changed from one form to another" and "The giant segments of Earth's crust float on Earth's molten interiors." The answer to your question is B. I hope that this is the answer that you were looking for and it has helped you.
In the above question, the statement 1 and 4 satisfies the conditions for forming a new oceanic crust.
The earth's crust has been constantly changing its form and it is due to the movement of those huge plates that are possible due to the convection current taking place at the mantle.
Explanation : Water Vapor is a source of warmth, since the heat that is radiated from Earth is absorbed by the water vapor. This is why greenhouses use water vapor as well.