Question

Which is not an achievement of Mayan civilization?

Answer 1

The answer is (c), lol your welcome. due to advancing in astronomy instead of mathematics. 

Answer 2

I would say the correct answer is B. a system of interconnected mountain roads and bridges.
A should be true as they did make these monuments called stelae. C is correct because their knowledge of math was far superior than any other nation. D is also correct because the Maya did use hieroglyphs to write. I would say that B doesn't belong here because roads were Roman inventions.