‘Namda’ refers to a craft involving:

Felted wool
Embroidery
Block printing
Wood carving

Namda is a traditional Korean craft involving felted wool. It is made by felting wool fibers together using heat, moisture, and agitation. The resulting fabric is soft, warm, and water-resistant. Namda is used to make a variety of items, including clothing, blankets, and bags.

Embroidery is a needlework technique that involves using a needle to stitch designs onto fabric. The stitches can be made in a variety of patterns and colors to create intricate designs. Embroidery is used to decorate clothing, home furnishings, and other items.

Block printing is a printing technique that uses carved blocks of wood to transfer ink onto paper or fabric. The blocks are carved with the desired design, and then ink is applied to the raised areas. The block is then pressed onto the paper or fabric, transferring the ink to the surface. Block printing is used to create a variety of items, including textiles, wallpaper, and books.

Wood carving is a woodworking technique that involves cutting designs into wood using a variety of tools. The designs can be simple or complex, and they can be carved into a variety of surfaces, including furniture, doors, and sculptures. Wood carving is a decorative art that has been practiced for centuries.

In conclusion, the correct answer to the question “Namda refers to a craft involving: Felted wool / Embroidery / Block printing / Wood carving” is felted wool.