Which of the following is a good example of narrowing a topic by asking more targeted questions

example;

broad topic: Depression

narrowed topic: what causes depression?

Targeted question: What studies in the past have shown a direct correlation between substance abuse and depression?

reasoning from several particular examples to establish a general principle

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.