GMAT Sentence Correction (SC) | Re: Passage of the Day

First of all, nice initiative by e-gmat.

Answers for the questions from aboveparagraph:

According to the passage,
1. What is the belief about Aztec?

Answer: : Belief is that it was constructed during two distinct construction periods

Passage Line :The belief that Aztec in New Mexico was constructed during two distinct construction periods

2. What are the two ways in which this belief has been proven?
Answer: : 1. by the modern tree-ring dating. 2. evidence
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