The correct option is B Complete physical, mental and social well-being
To live a longer life without stress, health is very necessary and good health enhances a more active life. Earlier health was considered only in the context of a body free from any sort of diseases but WHO described health in an ambitious and absolute way focusing on complete well-being.
According to the World Health Organisation (WHO)- “Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity”.