Final answer:
The term that describes a non-woven fabric intended to add body and stiffness to the interior of a garment is buckram. It is used in bookbinding and clothing to provide shaping properties. Canvas, batiste, and tulle do not serve the same purpose as buckram in this context.
Step-by-step explanation:
The term that describes a non-woven fabric intended to add body and stiffness to the interior of a garment is buckram. Buckram is a stiff cloth, made of cotton or linen, which is used in bookbinding and for stiffening parts of clothing.
Unlike canvas, which is a heavy woven fabric, buckram is stiffer and is used specifically for its shaping properties. Batiste is a lightweight, semi-sheer fabric and is not typically used for adding stiffness. Tulle is a light, fine netting which also doesn't provide the same stiffening qualities as buckram.