Explanation:

- Option 1: This involves the transfer of individuals between countries, including those in custody, for investigation or providing testimony.

- Option 2: Refers to the seizing and confiscating of assets gained from crimes committed in another country.

- Option 3: Deals with enforcing orders for seizing and confiscating assets as decreed by a foreign court.

- Option 4: Encompasses all of the above points, indicating a comprehensive approach to international legal cooperation.

All these options together form the purpose of the relevant sections in Cr. P.C. Amendment Act, 1933.

Option 4 - all of them is indeed the correct choice.

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