When many philosophers of the enlightenment discussed ideas about equality, they were referring to equality among what

The correct answer is equality among men.

Philosophers of the Enlightenment, like Voltaire, Montesquieu, and Rousseau were strong defenders of Humanism, by which they posited that "all men are born equal." This idea was very extended during the 18th-century and influenced the American Revolution and the French Revolution, and later it expanded across Europe and the Americas. It was the fundamental concept of important Historical documents of this period, like the United States Declaration of Independence and the Declaration of the Rights of Man and of the Citizen, a civil human rights document that resulted from the French Revolution. It is important to note that, since these philosophers stressed the equality among men only, it was extended to women with the Declaration of the Rights of Women and of the Female Citizen redacted by Olympe de Gouges, one of the first documents on the equality of men and women and the emancipation of women.

i believe your answer is d)

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