Final answer:
Patternmaking paper is typically transparent, gridded, and marked with inch increments, but it is not characteristically stiff and yellow in color. Therefore correct option is C
Step-by-step explanation:
The characteristic of patternmaking paper that is NOT true is C. It is stiff and yellow in color. Patternmaking paper is typically semi-transparent or somewhat transparent to allow for easy tracing of patterns. It is commonly gridded and marked with inch increments to facilitate accurate drafting of patterns for sewing and garment construction. Some types of patternmaking paper are plain while others are gridded, but the color is generally not stiff and yellow; this describes a different type of paper often used for different purposes.