Explanation:

- Option 1: Merton

- Robert Merton is famous for the strain theory but did not specifically discuss prostitution as a ‘safety valve’ for the family.

- Option 2: Cohen

- Albert Cohen focused on delinquent subcultures, especially among boys, not on prostitution.

- Option 3: Miller

- Walter Miller discussed lower-class subcultures and “focal concerns” but did not mention prostitution as a safety valve.

- Option 4: Loser

- There’s no notable sociologist by this name in this context.

Correct Answer:

- The idea that prostitution acts as a ‘safety valve’, threatening the family, was actually suggested by Kingsley Davis (not an option here). However, among the options, none are accurate.