Final answer:
The breakfast food derived from the name Ceres, another name for the goddess Demeter, is cereal. Ceres is associated with agriculture and grain, highlighting the connection between the goddess and the food we eat.
Step-by-step explanation:
The breakfast food we get from another name for Demeter, which is Ceres, is cereal. Ceres is the Roman equivalent of the Greek goddess Demeter, and she is often associated with agriculture, grain crops, and fertility. The word cereal is derived from Ceres, signifying food made from grain. This connection not only reminds us of the agricultural origins of our food but also reflects the cultural and religious significance of grain in ancient civilizations.