Was an English journalist and political economist. Her study of early American democracy concluded that the system was flawed and hypocritical because of slavery and the fact that both women and black people were denied equal rights. One of her most important contributions may be her English translation of Comte's Introduction to Positive Philosophy.

a) Harriet Martineau

b) Jane Addams

c) Mary Wollstonecraft

d) Simone de Beauvoir