Answer: A. There are three main techniques of sculpture in the round which include, casting, carving, and assemblage
Explanation: When it comes to sculpture in the round, it can be produced by casting, carving, and <em>welding</em>, not assemblage. The purpose of such a sculpture is to be visible in three dimensions, therefore the sculpture is made in three-dimensional form. These can be statues as well as busts (portrait busts), etc. They can be made by pouring some material into a mold, so the casting can be perform in the form of modelling. It can also be made from pieces of material, by carving as well as by welding components intended for sculpture. Given that these sculptures are depicted i.e made in three dimensions, so that they are actually free-standing.
A triptych is a work of art (usually a panel painting) that is divided into three sections, or three carved panels that are hinged together and can be folded. Hope this helped :)
