Which seam is a plain seam finished with a zigzag to prevent unraveling?

• A. Running Stitch
• B. Overedge / Zig zag seam
• C. Blindstitch
• D. Plain Seam

Answer: (B)

Finishing the edge of a plain seam with a zigzag stitch is a way to stop fraying and unraveling. When you apply a zigzag along the seam allowance, you create an overedge or zigzag seam that encloses the raw edge and keeps the fabric intact during wear and washing. This approach is different from a simple running stitch, which is just a straight stitch used for joining or tacking; a blindstitch, used for hems, hides the stitches; and a plain seam refers to the basic seam itself, not the edge finishing technique. So, the seam finished with a zigzag to prevent unraveling is the overedge/zigzag seam.