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Problem 18 - Entrance Test

The city council voted to invest in infrastructure improvements designed to alleviate traffic congestion and enhance public transportation. The project is expected to _______ improve commute times, _______ reducing air pollution and enhancing the overall quality of life for residents.

Correct: A

The correct answer is 'significantly; thereby'. 'Significantly' is an adverb modifying improve. 'Thereby' accurately illustrates the chain reaction of improvements to quality of life. The adjective form 'significant' would not work here. While 'thus' is also correct in meaning, 'thereby' more directly highlights the consequence.