Different fabrics require different seam allowances. Why is this?

The selected answer is correct because fabric weight directly impacts the way a garment behaves when sewn. Heavier fabrics often require larger seam allowances to accommodate their thicker structure, which can create additional bulk at the seams. Moreover, heavier fabrics may also fray differently compared to lighter fabrics, necessitating a more generous allowance to ensure durability and prevent unraveling over time.

In contrast, lightweight fabrics typically allow for smaller seam allowances since they are easier to manipulate and less prone to fraying. The drape of the fabric, which is affected by its weight, can also influence how seams lay and how the garment fits, making it essential to adjust seam allowances accordingly.

The other options do not accurately reflect the principles of sewing. While each fabric does have unique textures, that alone does not determine the need for different seam allowances. Additionally, seam allowances are not solely based on personal preferences; they must also consider the fabric's physical properties. Finally, treating all fabrics equally disregards their individual characteristics, which is vital in achieving a successful outcome in garment construction.