|Question 4Verbal

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One reasonable way to evaluate the ____ of a scholar's research is to track how often other scholars refer to that research. For example, George Washington University economist Annamaria Lusardi, who studies financial education and literacy, is among the world's most frequently cited researchers in her specialty, indicating that her work has had a significant effect on the field.
Which choice completes the text with the most logical and precise word or phrase?
impact
A
unity
B
complexity
C
expense
D