Which of the following is amorphous in nature?

An amorphous solid (Greek amorphos = no form) consists of particles of irregular shape. The arrangement of constituent particles (atoms, molecules or ions) in such a solid has only short-range order. In such an arrangement, a regular and periodically repeating pattern is observed over short distances only. Such portions are scattered and in between the arrangement is disordered.  Glass, rubber and plastics are typical examples of amorphous solids.
So, among the given options, Quartz, ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$, and dry ice are Crystalline, while Fused silica glass is Amorphous.