Final answer:
Solon was known as one of the 'seven wise men of Greece' due to his profound impact as a lawmaker and statesman, where he implemented significant social, economic, and political reforms in Athenian society.
Step-by-step explanation:
Solon is known as one of the "seven wise men of Greece" principally for his role as a successful lawmaker and statesman (option B). His efforts significantly impacted Athenian society through radical reforms and the establishment of a constitutional government. Solon introduced the "Law of Release", which eliminated personal debts and freed debt-slaves, thereby mitigating the social divides and preventing civil unrest. He also created the Council of Four Hundred, incorporating all citizens in governance based on wealth rather than heredity, and importantly, he codified laws on wooden panels for transparency. Although he hailed from an elite family, Solon's laws were designed to be beneficial for all Athenians. Moreover, he was a poet who used his verses to express his ideas on governance.