To ensure consistently high quality in its merchandise, the chain of retail stores became involved in every aspect of
their suppliers’ operations, dictating not only the number of stitches and the width of the hem in every garment as well as the profit margins of those suppliers.
(A) their suppliers’ operations, dictating not only the number of stitches and the width of the hem in every garment as well as - Pronoun issue - "Their" incorrectly refers to the chain; Not only X but also Y idiom
(B) its suppliers’ operations, dictating not only the number of stitches and the width of the hem in every garment as well as - Idiom issue -Not only X but also Y
(C) their suppliers’ operations, dictating not only the number of stitches and the width of the hem in every garment but also - Pronoun issue - "Their" incorrectly refers to the chain
(D) its suppliers’ operations, dictating not only the number of stitches and the width of the hem in every garment but also - Correct
(E) their suppliers’ operations, dictating the number of stitches, the width of the hem in every garment, and - - Pronoun issue - "Their" incorrectly refers to the chain ; changes the meaning -- the original sentence intends to convey that chain dictates not only the number of stitches and the width of the hem in every garment(minute details) but also the profit margins of those suppliers(big things) whereas this options all of them in parallel.
Answer D
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