Final answer:
The best hook for a research paper on economic inequality is option A, which states that the wealth gap between America's richest and poorer families more than doubled from 1989 to 2016.
Step-by-step explanation:
The best hook for a research paper on economic inequality would be option A: The wealth gap between America's richest and poorer families more than doubled from 1989 to 2016. This hook provides a specific time frame and highlights a significant increase in economic inequality. It sets the stage for a compelling argument and generates interest in the topic.
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