What statement best describes how mathematics was advanced during the Ming Dynasty?

During the Ming Dynasty, mathematicians improved and spread practical calculation methods, including the use of the abacus. Algebra and the concept of zero existed long before the Ming period, and woodblock printing was a way to reproduce text rather than the main mathematical advance described here. So the best choice is “The use of the abacus was expanded and refined.”

AI-written and checked against the verified answer.