B and C
The Mayans were polytheistic (worshiped multiple deities) so A is incorrect.
They had their own form of hieroglyphics so B is correct.
The practice of astrology was one of the most important aspects of Mayan culture, and they supplemented their knowledge of the stars using math to figure out complex patterns so C is correct.
It was the Incas, NOT the Mayans who had runners, so D is incorrect.
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It is known as Eastern Siberia, and please ask environment and geo questions in geography.
A) white supremacy. columbus was a racist so that makes sense