Explanation:

- Option 1: s. 5

- Section 5 deals with recovery of specific immovable property.

- It is not related to defences in specific performance suits.

- Option 2: s. 6

- Section 6 focuses on suits by persons dispossessed of immovable property.

- It is unrelated to contract defences.

- Option 3: s. 7

- Section 7 involves recovery of specific movable property.

- It does not address defences in specific performance suits.

- Option 4: s. 9

- Section 9 enables a defendant to raise all defences applicable in a suit on contract in specific performance suits.

- It ensures parties can present their case fully.

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