Which goddess is symbolized by the cornucopia?

The goddess symbolized by the cornucopia is Ceres, who is the Roman counterpart of the Greek goddess Demeter. The cornucopia, also known as the "horn of plenty," is a traditional symbol of abundance and nourishment, representing the bountiful harvests and the fertility of the earth. Ceres is especially associated with agriculture, grain, and the fertility of the soil, which aligns perfectly with the symbolism of the cornucopia.

This connection to agriculture highlights Ceres' vital role in providing sustenance to humanity, thus embodying the prosperity and richness that the cornucopia represents. In contrast, while Demeter also represents similar themes in Greek mythology, the specific association of the cornucopia most directly aligns with her Roman equivalent, Ceres, making this answer accurate for the context of the question.