The correct answer is A) They believed in many gods.
The other options of the question were B) They met in groups to worship. C) They recorded specific prayers. D) They were assigned religious duties.
What the glyphs left by the ancient Olmec civilization tell us about their religious practices is that they believed in many gods.
One of the most impressive and important cultures in ancient México were the Olmecs. They lived during the pre-classical Mesoamerica, between 120 BCE and 400 BCE. The Olmecs established in the territories of the Gulf of México, modern-day Mexican states of Veracruz and Tabasco. They worship many gods, and this religious and cultural belief influence coming civilizations such as the Aztecs in Tenochtitlan or the Mayas in the Yucatán peninsula.