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# Which of the following is a man-made polymer?

$\begin{array}{1 1}(a)\;\text{Starch}&(b)\; \text{Natural rubber}\\(c)\;\text{nylon}&(d)\;\text{Proteins}\end{array}$

PVC,nylon etc are man-made polymers.Strarch,cellucose,proteins,nucleic acids and natural rubber are natural polymers.
Hence (c) is the correct answer.