_____(1) _____ are made by heating sand silica until it melts into a liquid state. the melted glass can then either be shaped by _____(2) _____ the liquid glass or by pouring the melted glass into a mold. the shape and size of the finished piece depends on the tools and method used by the artist. a. (1) glass pieces of art; (2) condensing b. (1) fiber crafts; (2) hammering c. (1) glass crafts; (2) blowing d. (1) fiber pieces of art; (2) shaping please select the best answer from the choices provided a b c d