Final answer:
The Glorious Revolution (b) likely shaped John Locke's perspective on human nature and his theories on government by consent and social contract, influencing later political developments, especially in America.
Step-by-step explanation:
The event that likely shaped John Locke's perspective on human nature was the Glorious Revolution (b). Locke was influential during the Enlightenment, a period in which ideas about the nature of government and the rights of individuals were radically changing. His views on human nature being self-interested but capable of reason set the stage for his support of government by consent and the idea of a social contract. The Glorious Revolution of 1688 in England, which led to the constitutional monarchy under William and Mary, validated his theories by demonstrating that government, if failing its duty to protect its citizen's natural rights of life, liberty, and property, could be changed by the people. This was later reflected in the developments in America, where Locke's ideas influenced the Founding Fathers and fueled the fire of the American Revolution.