When santos stands in a swimming pool and looks at his feet, his legs appear to be bent. which is the term for this phenomenon?

The answer is Refraction

Explanation:

Refraction is the change in direction and speed that a wave experiences when passing from one medium to another with a different refractive index. It occurs when the light passes from one propagation medium to another with a different optical density, undergoing a change of speed and a change of direction if it does not affect the surface perpendicularly.