1.

1). Both II and III2). II only 3). Both I and II4). I only

Answer»

The ERROR lies in part 2.

The sentence uses the form 'have being' WORKED out, which is incorrect. The correct form should be 'are being' worked out; GIVEN the context.

Parts 1 and 3 are grammatically correct and HENCE do not require any corrections.

Therefore, the correct answer is option 2.



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