GMAT Sentence Correction
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Source: PREP
Level: 4
The rise of the Incan empire rested not only on the Incas' military might and the ability of their rulers but also they imposed a highly organized economic and political system on many different ethnic groups and permitting them to retain many of their customs and often their own leaders.
- A they imposed a highly organized economic and political system on many different ethnic groups and permitting them
- B on their imposition of a highly organized economic and political system on many different ethnic groups, who were permitted
- C because of their imposition of a highly organized economic and political system on many different ethnic groups, who they permitted
- D on their imposing of a highly organized economic and political system on many different ethnic groups and they permitted them
- E imposing a highly organized economic and political system on many different ethnic groups, permitting them