Step 1: Understanding the Question:
The question requires ranking different synthetic fibers used in fishing gear based on their tensile strength (breaking load) in an ascending order (weakest to strongest).
Detailed Explanation:
• Relative Strengths of Synthetic Fibers: Synthetic fibers vary greatly in their "breaking tenacity."
• Ranking:
• Polyamide (Nylon) (A): Is the strongest and most elastic among traditional synthetic fibers used in fishing.
• Polyester (B): Is strong but slightly less so than high-tenacity nylon.
• Polypropylene (E): Is a lightweight, buoyant fiber with moderate strength.
• Polyethylene (D): Is generally weaker than polypropylene and polyester.
• Polyvinyl alcohol (C): (Vinol/Kuralon) has significantly lower breaking strength compared to the others in this list.
• The Ascending Sequence: Following the standard technical specifications of fishing ropes: C (PVA) $<$ D (PE) $<$ E (PP) $<$ B (PES) $<$ A (PA). This sequence represents the transition from the weakest material to the strongest.
Step 2: Final Answer:
The correct ascending order is C, D, E, B, A.