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Although the new policy aims to increase efficiency, reducing costs, and enhancing employee satisfaction, some employees feel that the changes are too abrupt and poorly communicated.

Solution

✅ Correct Option: 4

This question tests parallel structure (parallelism).

Parallel structure means items in a series must use the same grammatical form, like three musketeers marching in step. When listing actions, keep verb forms consistent: "eat, sleep, repeat" not "eating, sleep, repeated."

Option 1 → Mixes verb forms: "increase," "reducing," "enhanced" — like mismatched socks.

Option 2 → "Reducing of costs" sounds awkward — you don't "reduce of" something.

Option 3 → Two base verbs, then a gerund — breaks the pattern halfway.

Option 4 → All three verbs in base form — perfectly parallel marching!

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