In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
Several countries ..................the world are now replacing the ..................model of criminal justice partly ..................wholly with different models of restorative justice, ....................................promising results in crime control. The process is more collaborative, consensual and inclusive, that is characteristic ..................indigenous systems of justice.

4. ..................promising results in crime control.