(C) zwitterion is a dipolar ion that contains both a positive and a negative charge.It is formed when an acidic group (like $-COOH$ or $-SO_3H$) donat

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Both $-NH_2, -COOH$ and $-NH_2, -SO_3H$

(C) zwitterion is a dipolar ion that contains both a positive and a negative charge.It is formed when an acidic group (like $-COOH$ or $-SO_3H$) donates a proton to a basic group (like $-NH_2$) within the same molecule.Therefore,both $-NH_2, -COOH$ and $-NH_2, -SO_3H$ combinations can form zwitterions.