Explanation:

The correct option is 3 (Section 39).

Section 39 of the Code of Civil Procedure (CPC) deals with the transfer of a decree. This section outlines the procedure through which a decree passed by one court can be transferred to another court for execution. It specifies the circumstances under which such a transfer is permissible, and how it should be carried out. The section ensures that the decree holder can enforce the decree in a different jurisdiction if necessary, thereby promoting effective execution of decrees across the country.