Final answer:
Stoicism was the Greek philosophy most valued by the Romans due to its alignment with Roman virtues and the emphasis on rational self-control.
Step-by-step explanation:
The Romans valued Stoicism as their Greek philosophy of choice, which resonated deeply with Roman values of self-sacrifice, strength, political service, and the rejection of frivolous luxuries. By the first century BCE, Stoicism, with its focus on rational self-control and embracing four core virtues: courage, justice, temperance, and wisdom, was widely favored among many aristocratic Romans. Notably, the Roman emperor Marcus Aurelius was himself a Stoic philosopher. Stoicism's emphasis on acceptance of fate and the importance of inner freedom made it particularly appealing within the Roman context.