Explanation:

- David Cooper: A psychiatrist associated with the anti-psychiatry movement. Cooper viewed the family critically, considering it a mechanism for social control and oppression.

- R. D. Laing: Also part of the anti-psychiatry movement, Laing argued that mental illness is a rational response to an insane world, often implicating family dynamics in the development of psychological issues.

- Edmund Leach: An anthropologist, he wrote about family structures, but his focus was more on the cultural and social aspects rather than viewing it as a purely ideological device.

- Vogel and Bell: They are known for their work on family therapy and dynamics, particularly focusing on the systemic nature of family interactions.

The statement, “The family is an ideological conditioning device in an exploitative society,” aligns most directly with the views of David Cooper.

Correct Answer: Option 1 - David Cooper