Quarantine is ineffective as a measure to control non-infectious diseases because they

1. cannot develop in isolation.
2. depend on long-term exposure to a pathogen.
3. may be inherited and affect the organism all their life.
4. may only be treated by genetic engineering altering cells.

Which is the most effective strategy for treating non-infectious diseases?

1. Hygiene
2. Pharmaceuticals
3. Quarantine
4. Vaccination