Who is considered the Roman supreme ruler among the Olympians?

Jupiter is regarded as the Roman supreme ruler among the Olympians, equivalent to the Greek god Zeus. In Roman mythology, Jupiter is known as the king of the gods and the god of the sky and thunder. His authority and power position him as the central figure in Roman religious practices and narratives, overseeing both the divine and mortal realms. Worship of Jupiter included grand temples and rituals, reflecting his importance in Roman society.

The other options represent prominent deities but do not hold the supreme sovereignty over the pantheon. Athena, known as Minerva in Roman culture, is associated with wisdom and warfare but lacks the overarching authority of Jupiter. Pluto, the god of the underworld, rules over the dead rather than the heavens or the other gods. Neptune, the god of the sea, is powerful in his domain but does not hold the title of king among the gods. Thus, Jupiter stands out as the definitive supreme ruler within the Roman Olympian structure.