Explanation:

- Robbery and Dacoity: In legal terms, robbery becomes dacoity when committed by a certain number of persons acting together.

- Option 1: Two persons

- Robbery by only two people does not escalate to dacoity.

- Option 2: More than two persons but less than five persons

- Robbery by three or four individuals still remains under the scope of robbery.

- Option 3: Five persons or more

- Robbery is classified as dacoity when committed by five or more individuals acting conjointly.

- Option 4: None

- No insights needed as Option 3 defines dacoity.

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