Step 1: Understanding the Concept:
Garment pattern layout techniques ensure pattern pieces align with fabric grain and one-way directional surface prints/naps.
Step 2: Detailed Explanation:
1. Unidirectional Fabrics (With-Nap Directional Prints): Fabrics featuring one-way directional surface motifs, napped piles (velvet, corduroy), or one-way satin luster must have all pattern pieces placed facing the exact same direction ('top-to-bottom').
2. Crosswise Fold Layout: Folding fabric crosswise (end-to-end) places the two folded layers facing in opposite directions ($180^\circ$ reversal). Cutting on a crosswise fold causes back panels to run upside down relative to front panels.
Hence, crosswise fold layouts cannot be used for unidirectional fabrics.
Step 3: Final Answer:
Thus, Crosswise layout cannot be used for unidirectional fabrics, matching option (B).