Explanation:

- Option 1: Hauriou

- Maurice Hauriou was a prominent French legal scholar.

- He is known for his work in administrative law, but not for the theory of group personality.

- Option 2: Gierke

- Otto von Gierke, a German legal scholar, proposed the theory of reality of group personality.

- He argued that groups or associations have a real, distinct legal personality.

- Option 3: Maine

- Sir Henry Maine was a British jurist and historian.

- He focused on the evolution of law and ancient societies, not specifically on group personality.

- Option 4: None of these

- Here, options 1, 2, or 3 should apply, so this option is incorrect.