Step 1: Define relief printmaking. In relief methods, the ink is applied to the raised surface of the printing block. The areas not meant to print are carved away.
Step 2: Analyze the options.
(B) Letterpress: This is a mechanized form of relief printing using raised, movable type.
(C) Wood cut: This is the quintessential relief method, where an image is carved into a block of wood, and the raised surfaces are inked.
(A) Thermal wax: This is a type of thermal transfer printing, which is a digital process and not a traditional relief method.
(D) Collotype: This is a planographic (flat surface) printing process based on gelatin.
Therefore, Letterpress and Wood cut are the relief methods listed.