A. The molecules of water on the surface change bonding as they dry out.
B. The density of the pin is less than that of the water's surface.
C. The surface tension of the water is so low.
D. The force exerted by the mass of the pin does not increase the surface area enough for the pin to enter the water.
Is the answer b
Never mind. The answer was D.
sorry the question was
Why is it possible to float a pin on the surface of water?