The light coming from the object is refracted at the water-air interface. This causes its apparent depth to be reduced. The apparent depth is less for objects father away from the edge. The refracted rays subtend a smaller angle in our eyes than the original rays would. Also, incident light from parts of the object far away from the edge may always strike the surface with angle greater than the critical angle. Hence, total internal reflection will occur, and light will not be refracted. Consequently, some parts might not be visible. Hence, the first three options are correct. Water doesn’t act like a lens. It is just a medium. Hence, (d) is incorrect.