Concept:
Nonwoven processes and testing methods are matched based on their functional role in web formation, bonding, or evaluation.
Step 1: Understand each item.
• Tensile test → evaluates fabric strength using wider sample (IV)
• Cross lapper → web layering device (VI)
• Spraying method → adhesive bonding (I)
• Wet laid principle → fiber suspension and deposition (III)
Step 2: Match logically.
\[
A-IV,\; B-VI,\; C-I,\; D-III
\]
Step 3: Final answer.
\[
\boxed{\text{A-IV, B-VI, C-I, D-III}}
\]
Thus,
\[
\boxed{\text{Option (B) is correct.}}
\]