Explanation:

- Option 1: Murdock

- George Peter Murdock was an anthropologist.

- Known for his work on family and social structure.

- Did not primarily state family as the root of societal problems.

- Option 2: Parson

- Talcott Parsons was a sociologist.

- Known for functionalism and the role of family in society.

- Viewed family as a crucial social institution, not a root of problems.

- Option 3: R. D. Laing

- Often mistaken for R. D. Wings.

- Psychiatrist who critiqued family’s role in mental health issues.

- Did not generalize family as the root of all societal problems.

- Option 4: David Cooper

- Psychiatrist associated with anti-psychiatry movement.

- Viewed traditional family structures critically.

- Highlighted the family as a source of societal issues.