According to alfred adler, how could you achieve the highest level of mental health?

Alfred was a psychotherapist, physician and also known as founder of individual psychology. His study focuses on community life ,elimination  and the health of population.
As stated by Alfred Adler, you can accomplish highest level of mental health if you work hard with free from illness for the betterment of a bigger group not just themselves. He says that every man has a part where illness is exist, if a man feel confident and away from illness he can work with better way and improve his mental and physical health.

the answer to that is b.