Final answer:
Becoming a knight was easier for noble men due to their role as the core of the fighting forces and access to resources and connections.
Step-by-step explanation:
It was easier to become a knight when a man was a noble because the nobility formed the core of the fighting forces in most societies. Male members of the nobility, who could afford to purchase and maintain horses, were the ones who typically became knights. Their role as society's defenders justified their exalted position. Additionally, being from a noble background often meant access to resources and connections that could help in pursuing a knighthood.