Question

what is the angle of incidence?
the angle at which light bends in water
the angle at which light hits a surface
the angle at which light is absorbed by an object
the angle at which light bounces off a surface

Explanation:

The angle of incidence is defined as the angle between the incoming light ray and the normal (a perpendicular line) to the surface at the point of incidence. It is about how light hits a surface, not bending (which is refraction), absorption, or bouncing off (reflection - that would be the angle of reflection).

Answer:

the angle at which light hits a surface