Step 1: Define relief printmaking. In relief printing, the ink is applied to the raised surface of the printing matrix (like a stamp). The areas that are not meant to print are carved away.
Step 2: Analyze the options.
Mezzotint and Etching are intaglio techniques (printing from recessed lines).
Silk Screen is a stencil technique (serigraphy).
Wood Engraving involves carving a design into the end-grain of a wood block. The raised, un-carved areas receive the ink, making it a relief technique.