The correct answer is "the worship of multiple gods."
The aspect of early Roman religion that helped to establish family households as the basic unit of Roman society was the worship of multiple gods.
The Roman Pantheon had a direct influence from the Greek Pantheon. It was not the only influence but one of the most important.
These were the most important deities of the Roman Pantheon.
Jupiter was the most powerful and supreme god in ancient Rome. He is the equivalent of the great god Zeus, from Greece.
Juno was the most important goddess n Rome, and is the equivalent of Hera, from Greece.
Minerva was the goddess of wisdom and is the equivalent of Athena, from Greece.
Neptuno was the god of the seas and is the equivalent of Poseidon from Greece.