1.

1). BC2). AB3). CD4). ADB

Answer»

The error in A is the preposition 'at' and should be REPLACED with 'for' as something is known 'for' a characteristic. 

The error in D is the word 'being' which needs to be replaced with 'as'. 'Ranked as' MEANS 'categorized as.'

Thus OPTION 1 is the correct ANSWER.



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