Answer:
A. predicted eclipses and developed a 365-day calendar.
Explanation:
One of the most remarkable characteristics of the Maya civilization was their accuracy when it came to the study of the Moon, the planets, the Milky Way, the Sun and other astronomical occurrences. The Mayan astronomy is one of the most accurate ones of Ancient civilizations. This allowed them to calculate the length of a synodic month and tropical solar years and develop a complex calendar. It also allowed them to be able to predict eclipses.
