Minos is a son of which woman associated with a bull?

Minos is indeed a son of Europa, a significant figure in Greek mythology known for her association with a bull, specifically the Cretan Bull. The myth recounts how Zeus, in the form of a magnificent white bull, abducted Europa from her homeland. After taking her to Crete, she became the mother of Minos, who later became the legendary king of Crete. Europa's connection to the bull is pivotal as it symbolizes not only the start of her relationship with Zeus but also the subsequent birth of Minos and his brothers.

The other figures mentioned, while they've their own important narratives, do not share the same direct connection to Minos. Demeter, for example, is primarily linked with agriculture and motherhood but not directly in the lineage of Minos. Ariadne, being a daughter of Minos himself, has a different relevance in myths related to the Minotaur. Hera is known for her role as the queen of the gods and her complex marriage to Zeus but does not bear Minos. Hence, Europa stands out as the correct answer due to her unique relationship with the bull and her substantial role in Minos's origins.