According to Maslow’s hierarchy of needs, following is at the top of pyramid: (A) Physical needs, (B) Self actualization, (C) Safety, (D) Esteem recognition
Answer is B. Social Pathology : Is the study of social problems which undermine the social, psychological or economical health of the populations; it is used to describe relationship between disease and social conditions.
Social pathology is uncovered by 'Social surveys'.