Step 1: Soft Ground Etching Explained. This is a specific type of (D) Etching. The process uses a soft, waxy ground covering a metal plate. A drawing is made on paper over the ground, causing the wax to stick to the paper where pressure is applied. Lifting the paper removes the ground, exposing the metal for acid biting.
Step 2: Materials and Technique. Like other etchings, soft ground etching is an intaglio process on metal plates. (B) Zinc plate printing is frequently used, as zinc is suitable for etching.
Step 3: Incorrect Options. (A) Wood Cut is a relief method, not an etching technique. (C) Stone printing describes lithography, a planographic method. Thus, the process applies to both (B) and (D).