A
High-density polyurethane composite mesh
B
Polyethylene terephthalate (PET) foil laminate
C
Biaxially Oriented Polypropylene (BOPP)
D
Cotton-linen blended paper security fiber
Correct answer: (c) Biaxially Oriented Polypropylene (BOPP)
Explanation
Biaxially Oriented Polypropylene (BOPP) is the durable polymer film selected as the substrate for manufacturing ₹10 and ₹20 polymer notes. Options A, C, and D mention incorrect or alternate materials not specified for this tender.