Final answer:
The best example of tertiary prevention is helping a person with a serious mental illness manage money, which supports quality of life and reduces disease symptoms
Step-by-step explanation:
The best example of tertiary prevention from the options provided is option 2) Helping a person diagnosed with a serious mental illness learn to manage money. Tertiary prevention includes strategies designed to support people who are living with ongoing health problems or conditions. It aims to improve the quality of life and reduce the symptoms of disease. Managing money is a direct form of support that can help an individual with a serious mental illness live more independently and minimize the impact of their condition on their day-to-day life. This can be seen as part of a broader approach to rehabilitation and ensuring that individuals can continue to function to the best of their ability within society.