Kaleidoscope is based on the principle of :

Correct option is C

The Correct answer is reflection of light.
Multiple Reflection:
Multiple reflections are the phenomenon in which the reflected ray of light reflects again by another reflecting surface. Multiple images can be formed by the combination of two or more plane mirrors by multiple reflections of light.
A kaleidoscope is an optical instrument with two or more reflecting surfaces inclined to each other at an angle so that one or more objects on one end of the mirrors are seen as a regular symmetrical pattern when viewed from the other end due to repeated reflection. It was invented by Sir David Brewster in 1816. It works on the principle of multiple reflections. When the white light hits the surface of the mirror, it gets reflected at an angle such that the angle of incidence is equal to the angle of reflection. Due to these multiple reflections of light, there is a creation of beautiful patterns.