Explanation:

- Statement 1: Functional interdependence of castes—Correct. The Jajmani system was about different castes performing traditional and complementary occupations for each other.

- Statement 2: Mahilwari system—Incorrect. Mahilwari system is related to land tenure, not the Jajmani system.

- Statement 3: Village social structure—Correct. The Jajmani system formed the backbone of a traditional village’s social structure.

- Option 1: 1 and 2—Only one statement is correct here.

- Option 2: 2 and 3—'Mahilwari system' is unrelated, so this is not correct.

- Option 3: 1 and 3— This is correct. Both statements are features of the Jajmani system.

- Option 4: 1, 2 and 3—Includes an incorrect statement.

Correct Answer: Option 3, 1 and 3