Circle in the Sky

Classical Mechanics Level 1

The image below is a photograph of the surface of the ocean taken from underwater. We see a bright circle in the center with a dark outside. Which of the following best explains this?

There are clouds in the sky above the surface, creating a bright circle surrounded by shadow The camera has a limited field of view and intensifies reflected light underwater The bright circle is the sun, which is magnified as light reflects off the water Light from outside the circle is bent away by the water as it enters and doesn’t reach the diver