Step 1: Concept
Condensation polymerization involves the reaction of monomers with the elimination of small molecules like water or methanol.
Step 2: Meaning
This process usually involves bifunctional or trifunctional monomers.
Step 3: Analysis
Polythene, PAN, and Teflon are addition polymers (chain-growth) formed from unsaturated monomers. Nylon 6,6 is formed from adipic acid and hexamethylenediamine with the elimination of water.
Step 4: Conclusion
Nylon 6,6 is the correct example of a condensation polymer.
Final Answer: (B)