Which seam encloses raw edges and is sewn on the wrong side, commonly referred to as interlocking fell or self-bound seam?

• A. Overedge / Zig zag seam
• B. Running Stitch
• C. Interlocking Fell / Self Bound Seam
• D. Tacking

Answer: (C)

The seam finish binds the raw edge by folding it into the seam so the edge is enclosed inside the seam allowances and stitched from the inside (wrong side). This interlocking fell or self-bound method creates a neat inside finish with the raw edge tucked away, so the outside looks clean without a separate binding strip. It’s different from an overedge or zigzag finish, which wraps the edge with a stitch along the edge but doesn’t fully enclose it inside the seam. Running stitch or tacking are simple stitches for holding fabric or temporary purposes, not finishes that encase the raw edge.