What did Mill fear?

religious freedom

pursuit of happiness

tyranny of the masses

lifestyle choices

John Stuart Mill feared the tyranny of the masses.

Explanation:

John Stuart Mill was an important philosopher and economist of the 19th century who championed the idea of individual liberties. He defended individual liberties against political oppression but also public opinion that could also be restrictive. He was thus somewhat apprehensive at the notion of democracy that some of his contemporaries proposed. He feared that democracy might descend into "the tyranny of the majority," and that public opinion could become restrictive and oppressive of individual freedoms and change.