medium · SAT Reading & Writing

For decades, historians assumed that the ancient trade route known as the Silk Road was a single, well-defined path connecting East and West. [Recent archaeological findings, however, suggest a far more complex network of shifting maritime and overland trails that evolved in response to local conflicts and seasonal weather patterns.] This new understanding highlights the fluidity of pre-modern global exchange.

Which choice best describes the function of the second sentence as a whole?

  1. It reinforces the traditional view that trade routes remained static over centuries.
  2. It provides a detailed list of the specific conflicts that influenced ancient trade.
  3. It definitively proves that the Silk Road never existed in any physical form.
  4. It introduces a discovery that challenges a long-held scholarly assumption.

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