According to Mill in these opening two paragraphs, liberty of action should only be limited Owhen it deviates from the accepted societal norms
Owhen it does not Concern others
Owhen it inteferes with another person's liberty
Owhen the person in question is a known criminal

When it interferes with another person's liberty

Explanation:

According to John Stuart Mill in On Liberty acknowledged that liberty of action should only be limited when it interferes with another person's liberty.

He argued that humans have the right to freedom and the only time such can be truncated was when such a person is restricted to prevent harm to others.

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.