What is the primary use of a seam ripper in sewing?

A seam ripper is a specialized tool designed specifically for removing stitches from fabric. Its primary purpose is to neatly and efficiently unpick seams without damaging the surrounding fabric. The tool typically features a small, pointed tip that allows the user to easily insert it beneath a stitch and a curved blade that helps to cut the thread cleanly. This makes it especially useful when mistakes are made during sewing, or when alterations are necessary.

In the context of sewing tasks, understanding the function of a seam ripper is crucial as it plays a vital role in ensuring precision and quality in garment construction. The other options do not accurately reflect the specific function of a seam ripper. For instance, measuring fabric length involves using tools like measuring tapes or rulers, while cutting fabric shapes requires scissors or rotary cutters. Holding fabric in place is generally done with pins or fabric clips. Therefore, a seam ripper is uniquely identified by its role in stitch removal, making it an essential tool in any sewing kit.