Correct option is (d) %26
For explanation I would say: URL encoding of ‘&’ is %26, its Decimal value is 38 and the Hex value is 26. %24 is URL encode of ‘$’ whose Decimal value is 36 and Hex value is 24, %2c is URL encode of ‘,’ its Decimal value is 44 and Hex value is 2c, %3d is URL encode of ‘=’, its Decimal value is 61 and Hex value is 3d.