which intaglio technique involves the use of a material called \ground\ to create lines?\na. engraving\nb…

Brief Explanations:

In etching, a ground (a waxy - like substance) is applied to the metal plate. The artist scratches through the ground to expose the metal beneath, and then the plate is submerged in an acid bath which eats away at the exposed metal to create lines. Engraving uses a burin to cut directly into the metal. Drypoint involves scratching the metal surface directly with a sharp tool. Mezzotint creates a tone - based image through a roughened metal surface and doesn't rely on a ground for line creation.

Answer:

B. etching