The correct option is D Tiny colourful glass fragments
A kaleidoscope is an optical instrument consisting of two or more reflecting surfaces. These surfaces are tilted towards each other at a certain angle to obtain symmetrical patterns when viewed from the other end. The tube with reflecting surfaces consists of coloured pieces of glass. By rotating the tube, symmetrical images are created. Tiny colourful glass fragment specially bangle fragments are required to prepare a KALEIDOSCOPE