The correct answer is D. An accurate calendar
Step-by-step explanation:
The Maya civilization was one of the most complex civilizations that existed in the American Continent before the European colonization. This stood out due to its advancements in areas such as mathematics and astronomy. Moreover, the advancements in these two areas allowed Mayas to create a precise and complex. This calendar was based on astronomical events such as the moon cycles and the planets' movement and included 260 days organized in what Mayas considered to be one year. According to this, the one that was a development of the Mayas was an accurate calendar.